Okay... I'm REALLY liking what I've been playing so far...
So, some suggestions.
1. MORE HAREM FOCUS!!!!!! As in, ore quests, character interactions, and dialogue. Maybe just like, asking the girls questions to learn more about them when not dungeon diving. I'd like to see character banter or just random events in the dungeon involving you and your party too, but I dunno how feasible banter would be with this setup.
2. MORE RANDOM EVENTS YOU CAN FIND WITH THE GIRLS DURING DUNGEON DIVES! Like the optional hot springs event with Viola. I LOVE stuff like that Or, y'know, more quests like Paila's to just give you reasons to dungeon dive. Basically, I just like interacting with my harem, so just give me more of that if possible. Seriously, I REALLY liked that hot springs chat.
3. Maybe a minigame or two? Like cards or something? Something to flesh out the hub town?
4. (And this one is low priority but still think would be neat) So, if you've ever played 'Fall in Labyrinth, which is also set on an island with a central dungeon you explore, there are other one off quest related dungeons on the island you can take on as part of heroine specific quests. I liked those. Anyway, just something to consider.
5. Notes and files you can find and read, just to flesh out the world? Not high priority, but I love stuff like that.
Questions... The music. Is this stock, or original. Either way, it's good! Like, the character related tracks more than the dungeons. The one that plays with Viola is really nice. And the overall pixel art and style are just... so damn nice. Simple, but charming and with just the right amount of detail that shows off the kind of work I want to create in my own game making attempts!
Well, it's far from what I'd call anywhere close to done, but what I've played gives me a lot of hope for this game's potential.