Review Detail of ro2y in Sign In Ten Years, Then I Am Exposed By My Gorgeous Senior

You need to read past chap 40 as the first story arcs are rubbish. The MC is a lazy shut in but expected as he is weak with an OP sign in system. The senior sister disciples are also kind of creepy trying to sexually groom an 8 year old. Back story of his origins are revealed when he turned 16. He left the sect, go on an adventure, sign in and grow stronger while protecting his harem (seniors) and taking their virginity along the way.