These are a few I could think of
https://www.mangago.zone/read-manga/koisuru_barairo_tenchou/
https://www.mangago.zone/read-manga/motoyan_papa_to_hitsuji_sensei/
https://www.mangago.zone/read-manga/oh_my_hero/
https://www.mangago.zone/read-manga/sorenari_ni_shinken_nandesu/
https://www.mangago.zone/read-manga/baby_love_sitter/
https://www.mangago.zone/read-manga/the_wolf_in_the_flower_shop/
look up the "single father" tag
Thnak youuuuu
Futari de Papa Hajimemashita
Since today is fathers day. Do you have any BL recommendations that includes parenting in it that is not omegaverse. Something like Kazoku ni Naryou or Family Simulation. Thanks.