Hinata-san no Koisuru Ondo

Hinata Koharu, who works at a chemical manufacturer, is not good at communicating with others and is easily misunderstood by others, and is often thought of as a slightly cold person. However, Koharu secretly harbors a crush on Aoi, who is like the sun, shining warmly on people. One day, when Koharu finds out that Aoi suffers from poor circulation, she begins secret warming lessons with Aoi. With each touch of skin and growing feelings, will the temperature of their love rise...?

(Source: Kodansha, translated)

Note: Includes six extra chapters.