This is kind of old news, but I had totally missed this. Apparently Maki is leaving HIGH and MIGHTY COLOR by the end of the year. This was announced in their official blog July 2nd. This supposedly has something to do with Maki getting married to Masato Nakamura (who is 29 years older by the way).
What can I say but: NOOOOOOooooooooooooo!!
I wish Maki all the best, but I’m sad to see her leave the band
Source: official blog (jap)
Some comfort pictures: