Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu

In a world where Western and Asian cultures mix together, the only son of Count Kikunoi from the Kiryuu Empire, is Ageha. His life was already over at the age of 5. He, who was born in a corner of the country, has zero allies or useful skills in addition to being overweight. What's more, it seems that his brother Regulus, who suddenly appeared on his life and was presented for the Count as his brother, will kill him in the future for his right to succeed...

His only weapons, are the abilities of "cooking and sewing," that he suddenly acquired along with the memories of his previous Japanese life. In the midst of all this, Ageha ends up raising his younger brother, but... "My brother is super cute?" And before he knows it, he becomes a full-blown doting older brother?!

Making handmade educational toys for his cute little brother and delicious chawanmushi (steamed egg custard)... With the help of his previous life's skills and my power as a housekeeper, he's able to improve the rough life of the people living in his territory. A fantasy of two young brothers managing their territory, where a single step gets even the gods involved in changing their country!

(Source: Shousetsuka ni Narou, translated)

Kikunoi, Regulus Berstein Main

Ise, Mariya Japanese

Kikunoi, Ageha Main

Kuno, Misaki Japanese

Rottenmeier, Adelheid Supporting

Nanao, Haruhi Japanese

Romanov, Aleksei Supporting

Toki, Shunichi Japanese

Princess Hyakka Supporting

Toyosaki, Aki Japanese

Crowe, Maria Supporting

Yasuno, Kiyono Japanese

Laurent, Dominic Supporting

Maki, Shunichi Japanese

Fiore Supporting

Terashima, Junta Japanese

Joseph Supporting

Sumitani, Kankichi Japanese

Kanade Supporting

Matsumoto, Sara Japanese

Satou, Masafumi Director

Watanabe, Jun Sound Director

Wanuka Theme Song Performance

Ms.OOJA Theme Song Performance

Reviews

Jul 16, 2025

Ifret

Recommended

"Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu" honestly didn’t catch my attention at first glance. I went in with modest expectations, but as the story unfolded, I found myself increasingly drawn to the characters and the thoughtful direction the plot took—especially the main character, who truly stands out in the ever-growing crowd of reincarnation-based fantasy protagonists.

Unlike the typical overpowered or self-centered lead, this protagonist is grounded, mature, and guided by a strong internal compass. His consistent and respectful approach to his new life, while remaining true to his beliefs, makes him not only admirable but also refreshingly realistic ... within the genre.

The character development overall is handled very well. Relationships grow organically, and there's a real sense of care put into how the world and its societal structures are built. The visual presentation is also impressive—the art style is clean, expressive, and adds to the immersion.

Of course, like any series, it has its flaws, but they’re easily overshadowed by how engaging the story becomes. I genuinely hope we get a second season, especially considering how the first one ended—with so much promise for even more depth, conflict, and growth. If you're on the fence about it, give it a few episodes. You might be as pleasantly surprised as I was.

Reviewer’s Rating: 10

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Jun 29, 2025

KANLen09

Mixed Feelings

Reincarnated as a Neglected Noble: Raising My Baby Brother With Memories From My Past Life - It's sweet, it's endearing, and above all...it makes me want to sleep in its arms because it's TOO comfortable.

Look, I'm not against ideas of child-rearing between familial people of any age, particularly because they're designed to make you feel the "oohs" and the "ahhs" when you see people care for their loved ones. This is especially the case between siblings of younger ages, where they're most vulnerable to the world around them, and the older ones must help them navigate and teach them the correct ways before the world's ... influences, starting with their parents, will change them for good or for worse. And this is better shown through novelist Yashiro's lone work, which is Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu (shortened to ShiroHiyo) a.k.a Reincarnated as a Neglected Noble: Raising My Baby Brother With Memories From My Past Life (the usual elongated LN title, I know), which depicts an exact scenario of an Isekai reincarnation story where, as much as adults try their best to string the royal children along, it's the children themselves that would have to defend one another, with some help from the typical past-life scenario.

Isekai reincarnation stories are, by this point, so bread-and-butter-ish that nothing actually should surprise the heck out of anyone. This goes for the 5-year-old MC kid of Ageha Kikunoi, the only son of Count Kikunoi, in the face of the Asian tradition and the Western modernization cultures clashing together in the specialized Kiryuu Empire. More than just your typical MC who has little to no talent or skill, Ageha's proposition is that he's like a pig, overweight and only destined for less than what his own family promised him to be. However, one day, the other brother of Ageha's, the younger 3-year-old Regulus Bernstein Kikunoi, comes, who is set for his future star to rise in the kingdom...and slay his older brother in the process when they grow up? If you're thinking what I'm thinking, yeah, this is all sorts of weird, but an internal coup d'état is not a surprise, if even at all.

Yet, for all of the negativity surrounding Ageha, there's only one thing that allows him to get by and do much good: memories from a past life (which is where the Isekai reincarnation inspiration comes from), enabling Ageha to help take care of his little 'brother while the adults fight their own political agendas (because why the hell would kids understand adults?). What Ageha could not do, he's certainly a better housekeeper to do all of the house's duties, as well as look out for the brother that he sees now as a literate Kawaii-ness of human fluff. From the cooking to item creations for Regulus's growing-up years, Ageha's future may be cooked, but what a time to live in the present and to help his brother grow up into a fine man, even though the same fine man would turn out to be his slain brother to take him down.

The Kikunoi family may be one of the most hostile families we've seen in anime, but fear not, for the adults closest to the family's young brothers certainly will help them understand along the way. Instead of family figures, using the rather uncommon people, like an elf, the housemaid, and gods themselves, it's certainly a different rhetoric to provide education to the young boys who know no better. Starting off with the elf of Aleksei Romanov, he's the teacher in charge of Ageha's development on all that's to know about the construction of the world and its magic, and the young boy's questions and answers to him on every single occasion, because he's not a stuck-up kid who knows his situation best. Alongside the strong-headed woman of Adelheid Rottenmeier, the head maid of the Kikunoi family always looks out for the entire family and has to put up with its idiosyncrasies. I admire Rottenmeier for the shit that she has to go through keeping the sanity of the always eventful family, which has constant bickerings from time to time. This, coupled with the other lower maids (Elise, Elsa, and Alice Utsunomiya; the latter of the 3 having the most exposure) spending time with the younger brothers, and nothing says eventful quite like some action within the Kikunoi house itself.

However, there's one more group of people that both Kikunoi brothers are acquainted with, and that is the gods themselves. To have people like Princess Hyakka and Igor be represented as gods with peculiar personalities helps to provide entertainment for both Ageha and Regulus in entertaining ways possible, like creating origami cranes and being inspired by songs from Ageha's previous world to see a musical of sorts. One thing's for sure, these gods are not devoid of any entertainment given to them by the Kikunoi brothers and will promise anything that they desire to manage them through turbulent moments. It's an unorthodox set of characters, that's for sure.

With such a simple premise, surely the production itself doesn't need to put forth too much effort, yes? And indeed, it doesn't take one too much to just animate with as little effort as possible, as do Studio Comet and its in-house director Masafumi Sato in just making this as bright, colourful, and palatable as possible to appeal to those who love comfort.

One thing I like about the show definitely lies in the music aspect. Composed by Arisa Okehazama, who has been in the AniManga industry since her days of working on MAPPA's Summer 2020 adaptation of The God of High School, the amount of experience she has, even working on low-profile shows like ShiroHiyo, proves that she can take anything and make it work. Even the OP and ED theme songs are quite good rhythmic ones, as is the case with every stylized Wanuka OP song and Ms. Ooja's simplistic but effective ED song.

I wish I had many things to say of ShiroHiyo that are good, and while it doesn't offer much in the way of plot and premise, its characters do the bulk of the work that makes the series what it is. However, the anime is just too comfortable for me to ever enjoy anything, even to the point of boredom, to end up not vibing with the show.

Maybe you feel different, and that's A-OK. ShiroHiyo is a comfort show after all, so be warned when you try to watch this show ahead of time thinking that it has something else to offer, that it ends up just being in its own circle of thought and never wandering elsewhere outside of the main plot.

Reviewer’s Rating: 5

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Jun 30, 2025

MIKOTO0

Not Recommended

I wanted to like Shirohiyo - Reincarnated as a Neglected Noble, but watching it was like sitting through a painfully slow trainwreck of cliché and childish nonsense. The show tries so hard to be cute and touching that it ends up feeling completely hollow, with every episode a repeat of dull scenes that go nowhere.

The main character, Ageha, is one of the worst leads I’ve seen in a while: he’s spineless, whiny, and completely unconvincing as someone who’s supposed to have “wisdom from a past life.” He just floats through each episode with no real personality or growth, reduced to a pathetic caretaker trope. The ... anime tries to make him sympathetic, but he comes off as a bland doormat who never does anything interesting or meaningful.

The events themselves are laughably trivial. Instead of any real stakes or emotional depth, we’re served endless fluff: cooking scenes, forced “aww” moments, and repetitive conversations with side characters who are just as shallow. There’s barely a story, and what little plot exists is smothered under pointless slice-of-life busywork that’s supposed to pass as character development.

And don’t get me started on the over-the-top gods and magical nonsense that pop in randomly to keep things moving — it’s cheap and lazy storytelling that only highlights how empty the show is. It all feels like the writers were desperately padding time to hit the episode count without any idea what to actually do with the characters.

In the end, Shirohiyo is a boring, uninspired mess with a main character who has the charisma of a soggy towel and events so insignificant they make watching paint dry look exciting. Avoid it unless you’re looking for a cure for insomnia.

Reviewer’s Rating: 2

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	Poll: Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu Episode 1 Discussion Stark700 - Apr 20, 2025	9 replies	by tofei »» Jan 15, 2:05 AM
	Poll: Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu Episode 12 Discussion Stark700 - Jun 29, 2025	17 replies	by WatchTillTandava »» Jan 4, 6:31 PM
	Did MAL place this show on the wrong season? Zero0Two0 - Oct 5, 2025	3 replies	by Alexioos95 »» Oct 6, 2025 12:05 AM
	Poll: Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu Episode 10 Discussion Stark700 - Jun 15, 2025	6 replies	by LucasDoragon »» Jul 7, 2025 9:31 AM
	Poll: Shirobuta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otouto Sodatemasu Episode 8 Discussion Stark700 - Jun 1, 2025	6 replies	by Laila53 »» Jul 5, 2025 2:06 PM