hello.. i'm looking for yaoi manga it was oneshot and it was kinda dark stories i don't re...

hello.. i'm looking for yaoi manga it was oneshot and it was kinda dark stories i don't remmeber much but it was about a school teacher who help troubled students and this one students when he saw bruses on his body when the kid was with his freind and got his shirt wet .. he askes him to come to his office i think and he told him that his mother beat him but that her way to show him her love and they got into similar relationship ..like he was inflicting pain on the teacher's body because it was the only way the student knows to show his love ...so sorry for this horribe discription but that's all i remmeber ا..thank you