Suzu was too busy mouthraping Matsuri to notice incoming Shirogane's fully unleashed anti-horni butt missile.
Interesting twist, the Gogyosen weren't inmortal old guys, they've been dead for centuries and their inmense grudge spawned 5 jinyo that acted in their place. No wonder their ability to corrupt ayakashi
I hope the manga goes further than this arc. Anyways, my prediction for the ending is that Suzu will learn how to swap Matsuri back and forth between male and female, and perhaps even split his masculinity and femininity like the Gogyosen's curse, all to satisfy her Matsuri horniness. Our boy will be at the mercy of Suzu's whims and get drained nonstop, so he better prepare...