Vivarium
@ch 30 Uke used to be rich, ended up broke and being a thief. One day leaves and is kidnapped by rich seme who is obsessed with him and has been stalking him for a long time. Seme holding uke captive. Seme was a child experiment and used in lab for testing by his dad. Dad currently still uses him as research and to get data to sell drugs. Seme's assistant also took him in but hates uke from the past. Seme was used as a child experiment and deprived of love/locked away for medical procedures. Seme uses that as reference to tame uke, by locking him up too. Still is under influence of dad and his assistant, who hates uke from the past.
Sei no Gekiyaku
Uke wants to end himself but is saved by seme who is also a doctor. Seme keeps him confined and does whatever he wants because uke doesn't want his life anyways. Seme still thunking of past lover who died, uke helps him get over it.
Sadistic Beauty BL Sidestory
Rich seme kidnaps uke who has nothing left after a big mistake. R him and keeps him locked up at his place but eventually starts to fall in love with uke and becomes obsessed with him. Uke tries to run away multiple times. Side story of another non-bl story.
Hellen
Seme does blackmarket organ trading and drugs. Uke was caught trying to sell drugs and seme keeps him drugged and dependent on him. Uke has mental health disorders which seme takes advantage of.
Obey Me