Fuzuki Kouyama
over protective

Within the first new pages/frames our initial impression of Mitsuki's grandmother is that of a very stern and mean person. She seems cold, and unsympathetic towards Mitsuki's dreams and passion. She is constantly trying to prevent Mitsuki from singer and would even go to the extent as to lock Mitsuki into a room.

The truth is, Mitsuki's grandmother is very over protective. With Mitsuki as her only granddaughter and perhaps only relative left, she wishes for Mitsuki to live a long life. With the knowledge that singing could actually shorten Mitsuki's life span, she will do everything in her power to keep Mitsuki alive. However with time, Fuzuki finally begins to understand the passion Mitsuki has for music.

Fuzuki used to be best friends with Meroko's past self, Moe. The two fell in love with the same man, Seijuro and when Seijuro ended up being with Fuzuki, Moe commited suicide. Eventually Fuzuki left Seijuro and had Mitsuki's mother with another man.

At the end of the series, we see Seijurou and Fuzuki finalyl reunite.