Based on machine translations of the image text and commentary, this appears to be a joint recruitment poster (potential scruples notwithstanding) for these ladies respective organizations. I've added notes reflecting both localization and the literal translation from Google Translate, as well as Google's translation of the commentary. Please feel free to review and let me know if it is not acceptable to use machine translations even for brief texts such as these.
AAAAAA Oh my god that is so incredibly cute I love all 3 of them. You took the three cutest girls and made them extremely lewd, not like a horny lewd, but an extremely cute lewd. This is literally perfection. Thank you random man on Pixiv for drawing this, and thank you random Danbooru uploader for letting me see it here today.
Knights of Favonius
Lit. "Knights of West Wind"Favonius Church
Lit. "West Wind Church"Adventurers' Guild