Regina Enculturation (Patreon)

Regina registers herself to become a host family of International Exchange Students for her university. The student who arrived was barely older than her, and he was eager to introduce her some "cultural values" that might make their stay gradually more pleasant for each other...

Might turn this into a mini-series? Also, thanks to Cuckboo (https://www.pixiv.net/en/users/74384038) for recommending me to use FFXII's Barret's (Also known as Bullet) for these shenanigans.