Kazuha and Heizou are both students at a high school in Teyvat. Heizou is alert and mischievous, and is also a person who often "flirts" with others, but when he is with Kazuha, his senior is also the captain of the literature club - Heizou will always blush and stutter. Because Kazuha was the person Heizou had secretly liked since his first day at school.