It is so irritating to click through all the places hoping you stumble upon an event. Will there be a walkthrough at some point? Because weirdly the one in game isn't helpful as much as I thought it would be.
I don't know, which event you are talking about, but if you read the dialogues and go through quest tabs and girls tab, most of them should be resolved.
Some events are time bound and some can't be done unless some other events are not done, and yes, there are some hints thats blunt regarding the time mentions, which we can only hope dev will correct in future updates.
As for walkthough, there is fandom page, but is still in progress. You can also join discord channel if you want more help