Makes the most sense to either add these pages to the other gallery or leave it as a Doujinshi, as it's part of a larger 18+ work and doesn't stand on its own. Reclassing it to Non-H will just hide it from everyone who might care to see it and clog up the page for people who don't care about it.

Base +6

Japanese (RAW, including the main story and this extras): https://eh.makinico.moe/g/3095668/202c0690ef/
English Translation (of the main story): https://eh.makinico.moe/g/2855775/241cb2a407/
Chinese Translation (of the main story): https://eh.makinico.moe/g/2416637/7b51762fe7/

Base +7