Responses
Seme became uke:
http://www.mangago.me/read-manga/puchitto_hajiketa/
http://www.mangago.me/read-manga/haru_wo_daite_ita/
http://www.mangago.me/read-manga/metro_dog/
http://www.mangago.me/read-manga/t_x_s/
http://www.mangago.me/read-manga/mazu_wa_ubaiai/
http://www.mangago.me/read-manga/seikimatsu_darling/
http://www.mangago.me/read-manga/kozure_ookami_inoue_satou/tr/134167/page/104/
http://www.mangago.me/read-manga/gravity_eyes/
http://www.mangago.me/read-manga/ore_tachi_no_kijou_jitai/
http://www.mangago.me/read-manga/room_1_2/
Ohoho sankyu both of you <3
Can someone recommend a yaoi where a seme changes preference on his type (for example: he used to like sweet little uke but turns to manly ones) or where the seme becomes an uke?