http://www.mangago.me/read-manga/passion/
http://www.mangago.me/read-manga/hokenshitsu_de_suki_ni_shite/
http://www.mangago.me/read-manga/boku_no_kichiku_megane/
http://www.mangago.me/read-manga/ano_kado_wo_magatta_tokoro/
http://www.mangago.me/read-manga/scramble_game/
http://www.mangago.me/read-manga/cannot_kiss_for_24_hours/
http://www.mangago.me/read-manga/vanilla/
http://www.mangago.me/read-manga/ashita_no_kimi_wa_koko_ni_inai/
http://www.mangago.me/read-manga/leopard_hakusho/ story 2 from chapter 6 on
http://www.mangago.me/read-manga/abiru_junjou/
Can anyone tell me about yaoi manga related to teacher student relationship where there are ups and down one was straight or where past relationshipof one made other insecure