Welcome!
I like your music - got some good ideas happening. I'll try and give you some feedback on what I feel could be improved below:
Ganbatte - I like the energy and overall flow. The percussion could use a bit more weight and impact. Right now it feels like wallpaper instead of really driving your piece. Check out side-chain compression for more details on this. The build up and hit at 0:45 could be much larger. When you go back to your A section idea, it would be nice to hear something altered here somewhat. So the return still feels like an evolution. While I like everything in your track, I feel like having a more contrasting C section would help balance your A and B ideas.
Pilgrimage - I like the lowfi sound! Nice change into the fuller section. Some of your violin is a bit pitchy - is this intentional? If not, you might need to tweak some things (either via re-recording or in post). Overall, though, nice playing! I like the folksy vibe combined with the more modern production. Percussion is awfully low in the mix. I'd work on getting a full sound while keeping your instrumentation more balanced. Piece kinda reminds me of some of the stuff from Bastion - and I mean that as a high compliment.
You've definitely got talent and skill! Thanks for sharing!