
you have not read enough. care to explain? what about these babies??? here are some for your enlightenment:
http://www.mangago.zone/read-manga/change_world/
http://www.mangago.zone/read-manga/kashikomarimashita_destiny/
http://www.mangago.zone/read-manga/kanawanu_koi_no_musubikata/
http://www.mangago.zone/read-manga/nichijou_climax/
http://www.mangago.zone/read-manga/life_senjou_no_bokura/
YOU'RE WELCOME.

There's a type where it's not kidnapping or holding captive. but essentially manipulating his mind. changing his thinking into making him love him. So when any outsider, like us reader would consider their relationship we would think it's, "not normal." I forget what it's called but there is a form of it without kidnapping.
Every time I read BL now, I will always abide by the rule I got from Yaoi Research Club manga that yaoi has no story progression, no conclusion and no meaning so I will move on and save myself from this shit lmfao