Any good yaoi with older seme??? I would love the age gap..

Itou san by Kuraka Sui
Hana wa Saku ka

http://www.mangago.me/read-manga/kikoeru/
http://www.mangago.me/read-manga/ani_no_senaka/
http://www.mangago.me/read-manga/kyoushitsu_no_yugami/
http://www.mangago.me/read-manga/kuroneko_wa_shippo_de_amaeru/
http://www.mangago.me/read-manga/because_of_you/?av=1

http://www.mangago.me/tag/age+gap/
I just checked the list on the first page but all of them are pretty good