I'm too lazy to write an introduction. In short, it's a classic setup: Hashirama is the protagonist, and there's no CP. To be clear, no CP. Other characters will say and do things to Hashirama that are typical of a harem game, but all Hashirama can do is run away because this is just too weird ()
Basically, after the Fourth War, canon Hashirama gets a chance to start over, but ends up restarting in what looks like a harem game... This harem game might be called [Heartbeat Konoha] (?), or [Konoha Literature Club] (??), or [Days in Konoha] (???), or [Konoha Album] (????), or [Future Konoha Diary] (????? That's not even a harem game anymore, come on!) or something like that... (looks away)
Hashirama himself definitely won't actually get involved with anyone in this harem-game world, but I still recommend that anyone who isn't comfortable with mixed pairings and chaotic relationships give this a miss. Of course, if you do take the plunge, don't blame me!
Theme: Don't play games from unknown sources
