Family affair

Brother

Brothers,happy end

son x Father

Father x son

ch 4-5 his adoptive father physically and sexually abuses him and rapes him and stuff. 

Cousins and step brothers at the same time (their moms are twins)
Their dads became lovers (ch 3 dad's sex)

Vol 2 of story above
Blondie is 30 now, seme is 23

Omega Father (35) x Alpha Adopted Son (18)
They will end up having a daugher

Twins

Ch 1- 4 (have feeling for step son, no sex)
Ch 5-6 (adoptive brother, rape by adoptive father)