Thoughts:
Gameplay
Being completely static when swinging your sword really sucks. It's gonna make it really hard to combo - right now, you hit a goblin, it gets knocked back, you gotta stop attacking and reposition. It could be fixed in many different ways; letting the player take a step forward with each swing, having different attacks when moving, or decoupling movement and attacking entirely, but the current state feels bad.
I didn't see any sort of defensive options like blocking or dodging; I'll assume it's just not implemented yet, but they're really needed.
There's a sprint, there's a crouch, but there's no slide when going directly from one to the other. Very sad; sliding is a quick way to make moving around the world more fun.
Aesthetics
I really hope the walk and run animations are placeholders, because right now I'm pretty sure my character's pooped his pants. The player's gonna be looking at them all game, so good walk and run cycles are a must.
The goblins have really harsh shading compared to everything else
For being such a weeby game, I had a real hard time making an Generic Everyman Japanese Dude character. Neckbeards and greasy ponytails were also notably absent, considering the protagonist's characterization as a nerdy pervert.
One of the posters in the game store had naked boobs on it. Is the game planned to have full nudity? If so, that's more explicit than I'd expected from the game's chibi artstyle.
Dialogue/Story
Why's everyone calling the protagonist "they"? Are you gonna implement female PCs? Even so, I hope you'll add a variable to track which pronouns to use in dialogue based on the player character's gender instead of leaving it as "they", because it feels really unnatural.
All the goblins are wearing panties, so how does the player know which ones are Rose's? Considering the tone of the game, it seems like a missed opportunity to not have a scene where she gets flustered as she has to go into detail.
Speaking of missed opportunities, the dialogue choice prompts are a decent start for giving the player choices, but it seems a bit of a waste when you have regular game systems that could handle some of them; for instance, sniffing Rose's panties or wearing them could be an option from examining them in your inventory. Likewise, why is peeking on her a dialogue prompt when the game already has a stealth system that you could use? I think letting the player discover opportunities to be a horrible pervert on their own would add a lot to the experience.
I hope you find some of this useful.