Both girls are suspicious about Kaede, but they have no choice but to take him in since the club is about to be closed due the absence of members.
Now, as the relationship between the Kaede, Hiromi and Mieko develops, the girls will help him with his depression.
Dating sims such as Tokimeki Memorial, and some role-playing games with similar relationship based mechanics to the genre such as Persona, often give choices that have a different number of associated "mood points" which influence a player character's relationship and future conversations with a non-player character.
These games often feature a day-night cycle with a time scheduling system that provides context and relevance to character interactions, allowing players to choose when and if to interact with certain characters, which in turn influences their responses during later conversations.
Homosexual relationships are also possible, as there are games with no specific gender lines ("all pairings").