Another work featuring Shibata Masaki, looks like she will forever be Ijiise's netorare poster girl at this point (5 years and counting) as intermission in-between his new works, she working in non-profit foreign aid now might as well be the recipe for her to be railed around the world, fuel for eternal netorare... her poor husband, even when she is actually saved Masaki comes back to her work in hopes of aiding others (in unintended ways).
Anyway, the woman accompanying Masaki is a new character, Sera Sonoka, also working in the same organization, evidently she has a husband to fuel the netorare bonfire as well, but she has a son, unlike Masaki who's still dreaming of a kid of her own with her husband (would it even be his at this point?)
Now Masaki got sent to the middle east, fictional country, to aid more people abroad; the past works already left Masaki with a dark addiction to sex which shames her deeply but this work went further on tampering Masaki, and Sonoka, with deep estate brainwashing so they can serve the local Lord and his family. This Part 1 of 2 for Masaki's current ordeal, she isn't getting out of this country yet.