Cengjing You Yongshi
English title: So You're Raising a Warrior
Japanese title: 曾经有勇士
Alternative titles: 용사가 있었는데요, There Was a Hero,Yongsa-ga Isseo-neundeyo
Type: ONA
Source: Manga
Status: Not yet aired
Aired: 2025 to ?
Duration: Unknown
Genres: Comedy, Fantasy
Themes: Childcare

The contrastingly cute dragon, Al, the first king-killer in the demon world, who has a full combat score but is ready to die and longs for a happy retirement, bumps into the cunning human magician Le Fei, and accidentally becomes a super dad who raises Le Fei's son Dino. Will Dino be an ordinary and happy child, or will he bravely pick up the Warrior's Holy Sword and face his own destiny...

(Source: Bilibili, translated)