http://www.mangago.zone/read-manga/kyuuso_ha_cheese_no_yume_omiru/ and the sequel: http://www.mangago.zone/read-manga/sojou_no_koi_wa_nido_haneru/
also: http://www.mangago.zone/read-manga/despicable/
hmm and i really like: http://www.mangago.zone/read-manga/kimi_ga_boku_no_subete/ (all the works of the author have a great plot) but u may have a problem with the art style..
plot wise, i also love: http://www.mangago.zone/read-manga/not_equal/ but its supernatural(time travel) so i dont know if it fits ur tastes...
http://www.mangago.zone/read-manga/doushiyoumo_nai_keredo/
http://www.mangago.zone/read-manga/sorenari_ni_shinken_nandesu/
http://www.mangago.zone/read-manga/hidamari_to_bentou_danshi_to/
http://www.mangago.zone/read-manga/hinadori_wa_shiokaze_ni_madoromu/
http://www.mangago.zone/read-manga/eunsuk_jung_gu/
http://www.mangago.zone/read-manga/itou_san_kuraka_sui/
http://www.mangago.zone/read-manga/wolf_in_the_house/
http://www.mangago.zone/read-manga/my_blood_and_soul_to_you/
(๑•ㅂ•)و✧
Im quite tired of the same highschool/childhood friend stories. Is there anything with a decent plot and art style with guys who arent in highschool? Thanks.