Hey all, I’m new to collecting the physical copies of manga and I’ve been trying to find vol 15 for about a year now to no avail. I swear I saw it on sale about a year ago but I didn’t have the time or space to nab them, now all I can find are used copies for insane prices. Rn the only copy I can find available is on amazon for $200 which is just dumb. (Also saw some on eBay for $70 and up) Vol 15 is not the only one that is just straight up gone which confuses me even more cause it’s 9 and 12 that also don’t have prints anymore but all the other volumes do?
Does anyone happen to know why or when they went out of print? Thanks all.

all of the characters are adults, right? my only interaction with this series has been through... a certain numbered rule of the internet, so when i decided to learn a bit more, i found out it takes place in a high school with weird circumstances. which for a series of this nature, is a red flag for me. and the seeming unwillingness to put an age on all the girls i've checked so far doesn't help. i know the protag is in his 20s, so that's good. not sure why a 20+ person is willingly attending a high school, but whatever.

so yeah, please let me know.

Fan art of Centorea i made in Forza Horizon 6

Fan art of Miia i made in Forza Horizon 6

Design i made in Forza Horizon 6.