[1][5] After moving to Tokyo at age 22, Yasuhiko joined Mushi Productions' training school and began working as an animator despite dreaming of becoming a manga artist.

[2] He has since admitted that he had no interest in animation and did not know what the job would entail, he simply applied to the newspaper advertisement on a whim in order to make a living.

Some of his most notable works as character designer and director are Brave Reideen, Combattler V, Mobile Suit Gundam, and Giant Gorg.

[2] But while working on Space Battleship Yamato, he visited Leiji Matsumoto who told him that manga artists could use brushes too.

[7] In the mid-1990s, Yasuhiko created works such as Joan, a three-volume story of a young French girl living at the time of the Hundred Years' War, whose life parallels that of Joan of Arc; and Jesus, a two-volume biographical manga about the life of Jesus Christ.

The artist also said that subsequent installments in the franchise focused more on the "Newtypes" seen in the series, which lead to critics and otaku misunderstanding the theme of Gundam.

[4][9] Yasuhiko further stated that the perpetrators of the Tokyo subway sarin attack in 1995 were "undoubtedly familiar" with Gundam and the "Newtypes".

[1] Yasuhiko then created Ten no Ketsumyaku, about a student in Manchuria on the eve of the Russo-Japanese War, for Monthly Afternoon between January 2012 and September 2016.

[16] Yasuhiko stated that the 2022 film Mobile Suit Gundam: Cucuruz Doan's Island, which he directed, would be his last work in animation.

Yasuhiko does not create memos, sketches or names in advance, he draws directly onto manuscript BB Kent paper in pencil.