Ah, I'm very familiar with these type of "game" 90% of the content will only be on the Mother side, she'll get raped/blackmailed/extort/fucked left and right while the Son will get jack shit, only after 10 Update maybe the son got a kiss on the cheek scene.
Warning for people, Expect 90% NTR/Cuck content, if you play and avoid it, you got nothing.