Events aren't exclusive to any version; they're in every update without exception. Of course, limited-time events are a different matter
I've found all the events. Thanks for your hard work, shousaka. It reminded me of the anime. Very Nostalgic. I think I've found some easter egg because I named all the girls and their codenames just like in anime. XD
oh, I hope the yellow-haired girl that I talked with her at the park bench could join the harem, too. XD