>>533769209
The appeal is the lack of infidelity and used goods - if these things don't concern the main cast, they don't exist in-universe and you can't even hypothetically be cucked at any point by anyone. You can start liking any girl at first sight and not worry about a thing at any point - she WILL be a kissless virgin for (You). Introducing used goods to the harem, let alone actual NTR, breaks that trust in the characters and irreversibly poisons the whole universe. The lack of "realism", which here represents truly vile things, is EXACTLY why it's great. Also
>When every girl is cock crazy for the MC