EEEEE MUSIC BOX TIME!
Aiko's Theme - Hey, a great mix of music box and orchestral instruments! However, the box is a little loud :_)
The Depths - it seems that we have plunged into someone's consciousness, where there is a lot of water, submarines, bubbles and blue pencils
Child Of Love - Juhu! The child got the love he wanted!
In general, it is very nice and beautiful) The only thing I can advise (If I have the right to do it at all, heh) this is to try to diversify the melodies a little bit and ... basically everything. Good job!
P.S. I like the simplicity of the cover art. This gives the overall soundtrack some "charm"