Soulbound HMV

It's called "Rondo Duo: Fortissimo at Dawn PunyuPuri ff", but I don't remember that PunyuPuri ff part so am assuming this is an updated version. The Circle (basically a small studio) that made it is Tinkle Bell. https://www.dlsite.com/maniax/work/=/product_id/RJ143025.html/?locale=en_US

This is from a game studio called Tinklebell, some of these are form the game Rondo but that is about all I know

I am not a big fan of the source material but you made it very enjoyable for me. GREAT Job :) also good song choice

Rondo duo i think

the artist is punyupuri i think as the art style is similar

@6ukii Its a game called "Tinkle Bell（ティンクルベル)"

for sources you can try TinkleBell

Artist?