D
Onii-chan wa Oshimai! Tanjoubi

Onii-chan wa Oshimai! Tanjoubi

Finished

お兄ちゃんはおしまい!誕生日

Mahiro, Mihari, Asahi, Miyo, Kaede, Momiji, and Nayuta each have their own birthday celebrations. These are short, standalone stories that focus on the daily lives and friendships of the characters from the Onii-chan wa Oshimai! series.

The manga collects nine birthday-themed chapters, each centered on a different character's special day. From Mahiro's party in 2022 to Mihari's celebration in 2023, the stories highlight the warm and comedic moments shared among friends and family.

As each birthday unfolds, the characters enjoy simple yet heartfelt activities like cake, presents, and quality time together. The collection offers a lighthearted look at their bonds without any major conflicts or plot twists.

Related

Share
Ask an AI

If you liked this, try these

Titles that share genres with this one.

D DonOtaku

The anime and manga community. We want to gather as much information as possible and make it available to everyone: the full catalogue, your list, news and what every member contributes.

We unify information from several aggregators —AniList, MyAnimeList and others— into a single database, and offer it for anyone to use. DonOtaku is an independent project.

Otakus

Social media

Covers, images, characters and trademarks belong to their respective owners and are shown for informational purposes. If you own any content, contact us.

© 2026 DonOtaku

D DonOtaku
Continue with Discord Continue with Google

By continuing with Discord or Google you accept the terms and conditions and the privacy policy.

or with your email

Forgot your password?

No account yet?