The Ice Guy and the Cool Girl 02 by Miyuki Tonogaya

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!

Snow spirit descendant Himuro finds himself infatuated with his somewhat offbeat and aloof colleague, Fuyutsuki. As the pair spend more time together, Fuyutsuki begins to notice a change within herself when she catches a glimpse of a side of Himuro that she could have never imagined existed. Meanwhile, Himuro continues to fall harder for Fuyutsuki with each favor she does for him...

Despite how cool, capable, and collected the two coworkers seem on the surface, their romantic inexperience may prove to be one of the greatest obstacles they'll face in coming to grips with their feelings for one another!