Well, he totally forgot about series where the whole girl harem protect a useless powerless MC. Now he is the MC of the world and the harem lol. If she has to act like a guy, the girls would take the news badly when they first see them "training"
Also, he has to accept since denying the offer would make him far from being the "protag's friend"
Also @Alexander28 imagine the poor cliché named butler now. His organs should be melting from the inside
>"look at this funny premise where we can make fun of a trope with an infinite number of examples in the genre"
>6 chapters later
>"never mind its a harem romcom now"
I feel like a lot of readers should go back and check out earlier chapters. There've been a number of situations where Koba was basically seducing Ryuu without him realizing and the author playing it for laughs. Ryuu's problem has also been massive chest pains which everyone has assumed was because of his power but is very obviously now because of the massive chest he's been binding.