An Archdemon's Dilemma: How to Love Your Elf Bride: Volume 5 by Fuminori Teshima

Nephy and Zagan have finally confessed their feelings to each other, but neither of them have any idea how to act like a normal couple. After getting some advice, Zagan finds out about a mysterious event know as a 'date,' and goes on a research trip in town where he coincidentally saves the blind therianthrope, Kuroka, a newly dispatched priest. At the same time, Nephteros discovers the truth of her origins and escapes to Zagan's territory while being pursued by Bifrons' chimera.