I originally started reading this back when it first came out because of how good the art was, but it quickly devolves into plotless, pointless drivel with barely any well established character personalities and development, the plot twists and drama come completely left field and serve to pile more clutter in this convoluted mess of a story. Mei is by far the most boring character I have ever seen become a love interest, Yuzu's pretty insufferable as well, and nothing made sense at all, even the side characters seem to exist for Yuzu and Mei's convenience, they had no personal motivations or stories, everything they did revolved around these two, it feels like a bad fanfiction come to life honestly.
Every book of theirs is worth reading and buying, also am loving, Eventually, I Will Become Yours, http://www.mangago.zone/read-manga/eventually_i_will_become_yours/
Girl friends blew me away hana and hina after school was great also, there have been a few that really were amazing. Lilly love amazing btw, Shoujo Sect was sexy, Hatskoi Shimai was sweet, Prism (higashiyama Shou) this was a breath taker http://www.mangago.zone/read-manga/sasameki_koto/
I know this may be a strange thing to compare it with, but this sort of reminds me of "Monster" by ShayP back when the Mai-Hime section of Fan Fiction was still really active, it's not completely alike, but the idea of military school and such had me reminiscing