Dear Sister, I've Become A Blessed Maiden vol 3 back

THINGS GET COMPLICATED AS A BLESSED MAIDEN GROWS CLOSER AND CLOSER TO THE ARCHMAGE!Umehiko and Theodorus finally connect as more than blessed maiden and archmage, but what are they? Don’t ask Umehiko; he couldn’t label them if he tried. Are they just friends? Friends with benefits? Or something more? As Umehiko struggles to figure out their relationship dynamic, he suddenly spots a very familiar girl in town—his beloved younger sister, Momo! When Umehiko learns that Momo, who he thought he’d successfully sent home, has been held captive here the whole time, he sets out to rescue her. But instead, Umehiko falls ill and needs Theo to rescue him!