Sorry for using a translator, so my English may sound awkward. Please understand.
About Adrian:
I think the full sharing everywhere feels too much.
It would be much better if, in No-Sharing or Romance routes, Adrian became more of a watcher (NTL feeling, like being NTR’d) instead of suddenly joining in.
Right now if we refuse sharing, the event just disappears, which feels empty.
Even a small adjustment like Alice’s solo cutscene would make the story flow more natural and enjoyable.