The light and airy melodies you create for the main theme are effective at evoking a spring feeling, buds and blooming, birds fluttering, everything beginning anew. I like the rhythmic pattern and flowing melody in wake up the fireflies. The dissonant chromatic notes slip into some passages add a certain charm and reinforce the human element in your design.
I particularly enjoyed the contemplative atmosphere you create in laying in the grass. I can imagine the velvety grass and staring up at the clouds, and there is a tinge of something somber here too that I cannot quite put my finger on. The extended harmonies in chamber of reflection are a breathe of fresh air, and there are some Debussy-like moments that melt my heart. Excellent work.