any yaois

Like the main characters are young or they have a kid?

http://www.mangago.me/tag/shotacon/
?

Stories which incorporate little boys who are the sons of responsible and loving gay fathers, not as love interests in and of themselves:

http://www.mangago.me/read-manga/our_town_s_electrician/

http://www.mangago.me/read-manga/ikumen_after/

(Actually, this is a common theme for Kodaka)

http://www.mangago.me/read-manga/koishite_daddy/

http://www.mangago.me/read-manga/fukigen_kareshi_no_nadamekata/

http://www.mangago.me/read-manga/takaga_koidaro/

http://www.mangago.me/read-manga/papa_i_love_you/

http://www.mangago.me/read-manga/gochisousama/

There is one older more mature one and one who is little and young and immature

All dark ish themes
http://www.mangago.me/read-manga/tsuki_yadoru/
Really young smut ish dj btw
http://www.mangago.me/read-manga/togainu_no_chi_dj_konnichiwa_koneko_chan/
Baby this incest btw
http://www.mangago.me/read-manga/nibiiro_no_hana_gou/