Played the Linux demo and it has potential:
- The atmosphere and graphics are nice.
- The plot classic but intriguing.
- The characters look decent so far.
What I suggest:
- The controls are non-standard. The normal controls in 2D Japanese games are arrows to move, Z for jump, X for action, C for special. What you have, WASD + Space + QE + PL, is too much, and confusing. You could also had gamepad controls as well.
- The battles are cumbersome. A better system would be block and attack, or dash and attack, rather than attack at the right moment and spot and maybe you don't get hit. As it is, it's frustrating, rather than fun.
- The animations could be improved. The characters fill a bit like stickers, they don't move organically. Maybe check the 12 principles of animation by Disney. It's an old book but all good cartoon animators follow those principles, including Japanese anime artists. However this is low priority, in my opinion. I like the aesthetics, it has its charm.
- The H animations need to be improved. This is the hardest to get right, but also the least important.
Please don't take this as harsh criticism, these are potential suggestions, if you want and can do. I honestly think these would improve the game a lot, but you do what you can, not what you want.
In any case, I'll keep an eye on this one.