How sure are you about this? I remember reading in the wiki that right now there aren't consequences but there might be in the future, but my takeaway from that was that having too high a point total might screw up the flags/triggers at some point, not that there'd be some meta narrative hammer that locks you out of an ultra true ending or whatever.
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Wait, is "I died with you" the cheering up event that you can miss? So she calls you out during the beach event no matter what?
100% sure that it will happen, things that are advertised as planned or possible have a very high record of happening in this game, 100% rate so far in fact. If it is advertised that a character dies in the next build, then a character is almost certainly going to die, for example. Not that my example has happened, it hasn't, we haven't gone that dark...yet.
What do you mean by calling out? If you mean
getting mad at you for going after Chika when she asked you not to, she only
gets mad at you specifically if you did Schadenfreude before the first beach event. Otherwise, she will still be upset since
she gets rejected either way, but it won't lock you out of seeing certain things. The next few events are where it really starts to branch, like
claiming not to be mad when she clearly is when you see her for the first time after the first beach event if you did Schadenfreude before the first beach event while not
making any mention of anger at all if you didn't, though things do generally play out the same, including what big things come next. There's also
a kiss in a later event that ONLY happens if you didn't do Schadenfreude before the first beach event, this is absent in the case that you did.
Having too many points in affection, the main stat that you build up before you ever even get the first lust event, already CAN screw things up. The Schadenfreude event thing is a very good example of this as having too many points with Chika may trigger it if you just so happen to visit the event location with enough points. Grinding them up to a point is a good thing, grinding them to the point that you have reached the cap for every event in the game before you get anywhere near the current last event is bad because it can cause a long event marathon where you basically have no control over when main events trigger unless they require a certain location. These event marathons can cause all sorts of triggers to go off for missing events if certain events are in that marathon. There are also several lust events that are part of a main event and they are missable if you do the main event they are tied to without enough lust, which is especially true if you trigger an event marathon that includes a main event with a lust event tied to it.
The first, and so far only, time I was a bad homie (did Schadenfreude before the first beach event), I had ground up enough Chika affection to trigger Schadenfreude before being a bad homie was even possible and triggered Schadenfreude, making me an instant bad homie in the first beach event in the next version after that one since the first beach event and schadenfreude were one version apart. I have not made that mistake again.