One in which every arc is about her trying to seduce a new high schooler, with ever more unhinged and wackier antics, only for him to freak out and run away leaving Souko to go back in tears to Yuusei telling him how she's sorry and that he's the only one for her. While Sumire looks on amused and Yuusei tries to figure out what she's going on about.
I don't think Sushi wouldl find another guy dedicated as yusei and also not minding she's a girl failure... that's why I mention, the energy is there but the author refuses because is not necessary for the plot, plus Sumire is being the best questionable hero in the story.
A lot more to do if he opens his own agency, planning, offical stuff, I mean he's doing all that already but he might have to start filing the dreaded taxes
In the US, if you make a profit from a hobby you are still required to report the income. You just can't report losses for a tax reduction. Of course most people wouldn't do that.
Depending on whether he hires his talent as employees (W2 employees) or they are independents signing contracts with him (1099 workers) makes a huge difference on how enormous of a burden the tax activity becomes.