Newly dating game
These documents can be viewed at any time in the game's archive feature, which is accessed from the title screen.
Hatoful Boyfriend is an interactive text-based visual novel that follows a branching plot line, with the player's decisions determining which of the game's multiple endings they receive.
On weekdays, the player can also choose which classes to attend, which changes one of the protagonist's three stats depending on the activity chosen.
Having certain stat values are required to obtain the good endings for each love interest and to otherwise advance along certain routes.
Choosing to live a normal life will result in a normal playthrough, while choosing to fulfill the promise locks the player into the true route or scenario Bad Boys Love, or BBL (also known as Hurtful Boyfriend), which explores the full extent of the underlying plot alluded to by the documents and various points of foreshadowing in the dating simulation portion of the game.
If the player chooses to fulfill the promise, aside from several dream sequences, gameplay at first appears to continue normally until the in-game date is 2 September.