Peter Grill and the Philosopher's Time(2020)

Peter Grill to Kenja no Jikan

Peter Grill is the world’s strongest fighter, but his ascent to the top came with an unexpected consequence: Women around the world, human and monster alike, want to bear his genetically superior children! Since he’s currently engaged to the love of his life, Peter isn’t too keen on his sudden popularity, and it will take every ounce of self-control for Peter to keep his hands to himself and his relationship with his paramour in one piece!

(Source: Sentai Filmworks)