Nice!
The characters are sweet and I like how the gameplay change with some passage, that also serve the story well.
Read the file where you worry a lot. I think if you like it there will be people who like it too, and when there is people who don't you're still satisfied because you're proud of it and like it. It's what I felt after barely some games I made too while I was worrying.
For pictures, I am also terrible at drawing but also too shy to contact an artist, but you can find some free assets on the internet! You may have to edit them though. Like this that is Creative Common for example: https://www.newgrounds.com/art/view/magicalnekolenlen/happy-nyuu-year
Wish you good luck! :)