I disagree a bit with the nsfw for punishment part. A lotta other bara games like Lustful Desire and Lust for Adventure which have battle features also offer nsfw scenes upon losing to an enemy. Submission is a lot of people's fantasy I guess.
I do think that, if devs can include saving feature in future builds, so that players don't need to repeat the whole process again to get the scenes they missed, it would be much better