Interesting setups, even if it is a bit rushed, it makes sense logically.
One thing I find really fascinating is that everyone but the new girl blames Sueharu for getting them into this mess, including Sueharu himself who blames himself for getting caught up in his emotions. The other two really don't seem to be able to take responsibility for playing with his emotions, and I think it's because one of the themes of this story is how everyone is so concerned with their own feelings that they can't help one another get over their own problems. The only one that doesn't blame him is the new girl, who is trying to trick him into entering show business again because she's being manipulated into it, but she is so incredibly lonely from being a star that she has these deep-seeded issues with depression as is typical for people in her position that she wants to crawl out of no matter what.
Also there's the blatant setup for the spin-off which I hate, but what are you going to do.