This is a perfect sequel! The plot has much less homophobia and more realistic problems. Harada is actually great at realism, in a certain way, and the dynamics between the characters are awesome. The only thing I can comment on is that some sex scenes were amazing, but the lacked the feelings of the last scene in the previous story. I might bump up the rating if reading this later without directly comparing it to the first volume makes me like it better.
Yoru To Asa No Uta EC