Here you go with the novel version h t t p s ://ateliersolaris.com/novel/be-careful-of-contractual-relationships-with-friends/
The asistant is so funny. He has an answer to everything with quite a lot of details but how come he has never said anything to his master before???
the summary is almost a copy of another story "For My Derelict Favorite", which also has a light novel version
I am on chapter 11 but there have been so many missing pages compared to raws... I will read it on hari