The third Okiraku Ryoushu no Tanoshii Ryouchi Bouei book mostly concerns itself with the recruitment of additional crafters so that, eventually, the protagonist doesn’t have to do everything himself. Aside from that… there’s also a bit of character development for his fiancée.
Oukyuu Majutsushi toshite Hirowareru‘s fifth entry busies itself with the establishment of Luke’s new taskforce and Noel growing into her role as a superior officer. Unfortunately, we once again come to the cusp of romantic progression only to have it snatched away at the very last moment (the novel ends on a cliffhanger). Which is annoying enough that I don’t think I’m going to follow it any further.