Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?

My Younger Brother is Really Big, Wanna Come See?

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Alternative Titles

Japanese: ウチの弟マジでデカイんだけど見にこない ?
English: My Younger Brother is Really Big, Wanna Come See?
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Type: OVA
Episodes: 2
Status: Finished Airing
Aired: Apr 28, 2021
Producers: Lune-Pictures
Licensors: None found, add some
Studios: T-Rex
Source: Other
Genre: HentaiHentai
Duration: 16 min. per ep.
Rating: Rx - Hentai


Score: 7.661 (scored by 1169511,695 users)
1 indicates a weighted score.
Ranked: N/A2
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #4684
Members: 22,819
Favorites: 320

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Ranked N/APopularity #4684Members 22,819
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Episodes: /2


Nao, a young preteen, is caught masturbating in the bathroom by his older teen sister Chiaki after having broken his beloved sex toy, Sakura-chan. Far from disturbed, Chiaki is surprised by the size of her younger brother's penis and takes a photo of it to share with her friends, urging them to come over to see his "Cockzilla."

The very next day, two girls named Nagisa and Yukiko arrive at Chiaki's house to look at Nao's Cockzilla. Shamelessly, Chiaki exposes her brother's body before her friends' astonished eyes while they start discussing his size. With the intention of knowing its true caliber, they engage in stimulating it beyond its limits.

[Written by MAL Rewrite]

Characters & Voice Actors




Yasuda, Naoko


Ozaki, Miku




Honda, Pisan
Raika, Ken
Sagari, Megane


Opening Theme

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May 8, 2021
Studio T-Rex, brand Bunnywalker.
"Ijirare: Fukushuu Saimin", "Ane wa Yanmama Junyuu-chuu", "Oide yo! Mizuryuu Kei Land" and so many more...the list would go on and on. What do they all have in common? The brilliant animation of course. This h*ntai "Uchi no Otouto" is no exception as well.

Let's start with the "story", even if that is certainly not the most important thing. Who doesn't know them: Shotas with a HUGE D. Forget everything else, those little boys are the real bosses. They often manage the impossible thing and you just have no chance against them. In this case, our little boy is the only one ...
Jun 9, 2021
Well, my focus is on the sex scenes, so I will go direct to that matters, considering Animation, Camera:

-Animation: 9,5/10 - The animations is fluid, good movements.

- Camera: 7/10 - I think has a good camera on the sex scenes, not fully satisfied because I like some positions that doesn't have in this show and doesn't showed much ass (that I love!). Only don't like much the intern penetration focus view, it's so strange to me focus in this lol - my opinion

-Sound 9,5/10 - The voices are good overall, I liked it, it's not irritant, not excessive talk, and music is okay.

-Art 9/10 ...
Jun 14, 2021
Mixed Feelings
"Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?" seems to be the next big hentai hit after the astonishing success of "Ane wa Yanmama Junyuu-chuu".

Does it really deserve to be praised?

Short answer... No

Long answer... (spoilers included, don't read if you care about this junk)



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