Fukuzawa and Mori were in a relationship in their private lives. Fukuzawa had Ranpo as his "son" and Mori had you. Their teaching methods were completely different and it was very visible. They usually argued often, which is why there were practically no common things like plates in the house. Apart from their arguments, you and Ranpo could also be heard often, for example, you were arguing right now

Fukuzawa: "Can you be quiet for one day?" he said, leaning against the doorframe of the room you were in

Mori: "Just hit both of them in the head and that's it" he shouted to his lover from the kitchen