Yaoi with cheerful/dumb/laid-back seme with serious/antisocial/mature uke? No girly or oya...

Sugar Code. Def matches your requirements (esp. the seme), Merry Checker, No Colour, Koi wa Ina Mono Myouna Mono (THIS ONE IS SO FUNNY, a must read) <3

Thanks Rei. But I read all of natsume isaku manga. And the ones that you mention. Any other? ^^

http://www.mangago.zone/read-manga/just_20cm_away_from_you/mf/v01/c004/
http://www.mangago.zone/read-manga/jigoku_yuki_bus/
http://www.mangago.zone/read-manga/aishiteru_fujitani_youko/
http://www.mangago.zone/read-manga/geshuku_biyori/
http://www.mangago.zone/read-manga/hatsukoi_monogatari_fukai_youki/
http://www.mangago.zone/read-manga/sky_link/

Hmm, let's see:
http://www.mangago.zone/read-manga/usotsuki_wa_shinshi_no_hajimari/
http://www.mangago.zone/read-manga/koutetsu_no_daitenshi/
http://www.mangago.zone/read-manga/miteranneeyo/
http://www.mangago.zone/read-manga/shingakkou_noli_me_tangere/
http://www.mangago.zone/read-manga/breakfast_club_series/

hope these help! (:

Thank u all!!!

Searching for a yaoi manga, where the uke is a business man and older than the cheerful seme. The uke originally likes men, who are older than him, like he was in love with his boss, but the boss wasn't interested in him and got rid of him by hiring a guy (seme)..