Koori Zokusei Danshi to Cool na Douryou Joshi

Sparks fly between the handsome descendant of a snow spirit and the oblivious coworker he has a crush on! A romantic comedy in an office setting that takes coworkers to lovers to new heights within a winter wonderland of emotions!
Himuro is a modern-day ice god, an ordinary office worker who just so happens to be the descendant of a snow spirit. He's also besotted with his coworker Fuyutsuki, who's a little unusual herself. At first glance, the pair both seem to be calm, cool, and collected. But beneath Himuro's icy good looks rages a passionate blizzard of love! On the other hand, his coworker's cool facade belies nothing about any feelings she might have for Himuro in return⁠-because she's too oblivious to realize anything! What's a snowman in love to do?
(Source: Square Enix)
Note: Originally uploaded to Twitter, after nine chapters it was serialized by GANGANpixiv, where it is being republished and now continues.