Omega is kept in a shed by family and a beta was hired to have sex with him. Omega had a partner but measures were taken to cancel the bond, however he went into perpetual heat. It seems as if the brother was the one who bit him... anyway it also seems like beta is falling for him.
Read it in Spanish on https://qvfammaonline.blogspot.com/2018/12/kimi-wa-mou-kamenai-informacion.html?m=1
Kimi wa Mou Kamenai