Rimuru Tempest's Questions (2)

Try "My darling signed in" and "candy man"

http://www.mangago.zone/read-manga/when_the_yakuza_falls_inlove/ he raise a yakuza child.

http://www.mangago.zone/read-manga/love_is_an_illusion/?2b90
http://www.mangago.zone/read-manga/when_the_yakuza_falls_inlove/

Ace no Kyuujitsu. It is not really a child but the main character have a child

http://www.mangago.zone/read-manga/raising_a_child_and_falling_in_love/

http://www.mangago.zone/read-manga/hyacinth/