Really solid OST and concept! The tracks fit the fast-paced bullet hell gameplay perfectly, and the use of motifs and Vocaloid adds a lot of energy and personality. The dark take on the theme over the warm or nostalgic vibes is exactly what I believe you were going for, so great on that. My only note is that the connection to “One Summer Night” still feels a bit loose, but the music itself is excellent and super engaging. Nice Job!