I must’ve gone blind but

Yeah. A girl who acts and looks like usui and a boy who looks like misaki. They are so cute ε=ε=(ノ≧∇≦)ノ Usui and his daughter always tease misaki and her son with their smirking faces and similar attributes

Ikkkk theyre so cuteeee

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

This is after their marriage and at the end in chapter 7, you will see their kids

This shows alot more about the kids and also usui and misaki in their 40s
http://www.mangago.zone/read-manga/yukiochimura_ni_oujosama/

Ik but there are more side stories and about usui if you go this link tho
http://www.mangago.zone/read-manga/kaichou_wa_maid_sama_marriage/