What is the fine-grained topic of the following text: Fall has come to Minami-Kitazawa and Asahi Saruta has been there for some time working as a station staff along with his incredibly good looking senpais, dealing with crazy events that are all part of the schedule in that particular station (and some events that are not part of the schedule but are still crazy.) Only return the topic.
Asahi Saruta's experiences working as a station staff in Minami-Kitazawa