Better resolution version (1500p) can be purchased here https://book.dmm.co.jp/detail/dmmmg_0912/ I can remove the protection through pm on forums, so the result will be original filesize + original quality. Of course, a good paper scan would still be better.
do you think Haha to Ko no Kanbi na Choukyou Kouza from the same artist and this one share the same settings? im pretty sure they have some character in common. ( /g/771677/d6479eb0de/ )