If seme’s father had a one night stand with uke’s mom and had him, that makes them blood related step brothers.. Besides they have same eye colour.. ┑( ̄Д  ̄)┍ Didn’t read after first two chapters.. So don’t know if they are related or not.. ┑( ̄Д  ̄)┍
If seme’s father had a one night stand with uke’s mom and had him, that makes them blood related step brothers.. Besides they have same eye colour.. ┑( ̄Д  ̄)┍Didn’t read after first two chapters.... AnuBis
There’s no such thing as being “blood related step siblings” so i think the term your referring to is being “half siblings”?
Lorraine — an angel !!! (づ ̄ ³ ̄)づ