Yo

Im looking for a specific manga like that, cant find. Perhaps your post can help. Taller black haired uke, Smaller light haired seme they are high schoolers, at first we think Taller one will be the seme, the did lewd things in Tallers one house (no sex), after that one of them travels away they have sex in the school near pool I believem idk. The Taller one has that hard to approach vibe,

http://www.mangago.me/read-manga/boku_no_high_spec_kareshi_sama/
This is hilarious.

Mishima Kazuhiro is an master of that field. Some of her best imo are:
http://www.mangago.me/read-manga/lovers_doll/
http://www.mangago.me/read-manga/love_doll_house_mamiya/
http://www.mangago.me/read-manga/seiheki_strike/

Also these manga have what you want:
http://www.mangago.me/read-manga/ore_to_aitsu_no_jikangai/
http://www.mangago.me/read-manga/scratch_blue/

http://www.mangago.me/read-manga/koitomo_/
http://www.mangago.me/read-manga/koishite_baby_miyako_mimeko/
http://www.mangago.me/read-manga/shishi_mo_kobamazu/
http://www.mangago.me/read-manga/app/

you can check the "Short Seme" and "Cute Seme" pages :">

NOT THE USUAL YAOI TROPE
 • shy/timid seme
 • short seme
 • cute seme
 • alpha uke
 • masculine uke
 • unpredictable
http://www.mangago.me/home/mangalist/635458/

Follow the list to be updated. And if you liked the mangas/manhwas I included, please do recommend. Enjoy~ (人 •ᴗ•)

THANK YOU VERY MUCH FOR THE RECOMMENDATIONS!