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Let's learn about


On one fateful day in autumn 1999, a boy with the name of Otsuka Ryoma

was born in Fukuoka. To carry on with his education, he moved to Tokyo and study Mathematics at Waseda University’s Department of Communications and Computer Engineering.


Besides being a senior in the university, he is also prominent as a member of Waseda Boys, an affiliation of Nihongo Mantappu YouTube channel. 

Over the years, he has accumulated 650K+ followers on Instagram.


He is also seen to be more confident on vlogs and is studying Indonesian

in his spare time.

Social Links

  • Instagram
  • TikTok

Otsuka's Portfolio

Full name:  Ryoma Otsuka (大塚稜馬)

Nickname: Otsuka

DOB: Fukuoka, October 19th 1999

Nationality: Japanese

Height: 165 cm

Zodiac: Libra


  • Kyushuu International University
    High School

  • Waseda University
    (Communications and
    Computer Engineering)

Religion: Catholic

Trivia: Good at physical exercises such as gymnastics, track, and field, parkour, etc.

Basic data