Aoi&#039;s baby brother, who is often mistaken for her own child. He is considered to be Beelzebub IV&#039;s sworn enemy (only by Beelzebub though).

Oga Tatsumi is a first year student in Ishiyama High, a notorious school for delinquents. One day he sees a man floating by, and the man suddenly splits in half to reveal a baby boy inside! 
(Source: Crunchyroll)

**Height:** 151.6 cm

[Official Website](https://www.takagakiayahi.com/) | [Music Ray'n profile](https://musicrayn.com/takagaki_ayahi) | [Official Blog](https://ameblo.jp/takagakiayahi-blog/)

Ayahi Takagaki graduated from a Tokyo music college majoring in operatic singing. Her professionally trained operatic voice can be heard in songs like "Life", "Inori" or "Justice".

One of the members of Seiyuu Group, [Sphere](https://anilist.co/staff/103636).

**Non-anime roles:**
- Aloy - Genshin Impact

The story follows the "strongest juvenile delinquent", Oga Tatsumi, a first year in "Ishiyama High" the school for delinquents. One day while sleeping next to a river he sees a man floating down it, he pulls him to shore and the man splits in half revealing a baby boy. This boy is the son of the demon king and he has been chosen as the one to raise it with the baby's demon maid Hilda. The story follows his life with the child and at the delinquent school.
 
Note: Includes 12 extra chapters.

A side story to the main series Beelzebub

Kouta Kunieda