Played it. Game is a grind fest with lots of dungeon crawling and rpg mechanics, it's above average for a rpgm game, which isn't saying much TBH.
There is a definitely a lot of Netorase but as you said it's very separated from the main story, so netorase is more of a "reward" for progressing the story. And heroine MC interactions feels a bit weak, specially when you start to progress in each heroine route, it starts to feel like the girl is just doing her own thing and MC consents without any presence.
Scenes are good though and art is pretty decent for AI image standards, also the presentation is good for low budget indie, and doesn't feel it has a lot of bugs.
for me honestly is a 2.5/5. just because of the weak netorase and relationships, might be better for you if you like the rpg or general quality, but it wasn't that good for me, if i want a rpg i just play a good rpg.