Yaois where the uke change dramatically from ugly to cute/hot
Tsumi to Kuchizuke, shy plain uke and seme realizes he's not as plain as he first thought. Also Koiyami Archive seme rejects uke until he see's a big change. Mawaru Sekai no Kimi to boku, uke very cute when young but looks different when older and seme doesn't recognize him. Hope these are what you are looking for.
Where there is a little boy
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/
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/
Anybody know any?
You probably know this one already, but I can‘t think of anything else
http://www.mangago.me/read-manga/majouu_school_days/
(I guess you can call his ass feminine...)
Does anybody know anyone's with rlly good drawings?
Love so Life http://www.mangago.me/read-manga/love_so_life/
hanazakari no kimitach e (hana kimi)
Any yaois where there is a young cute gay prostitute
And this one too highschool student
http://www.mangago.me/read-manga/jigoku_yuki_bus/tr/148630/page/117/
Check out my list
http://www.mangago.me/home/mangalist/59465/?filter=&page=4
39-41 will do, 45, CJ Michalski's manga
yaoi where there is a really slutty uke and a seme who is powerful
maybe http://www.mangago.me/read-manga/honto_yajuu/
http://www.mangago.me/read-manga/virgin_love/