春夏冬 ハル

He is a modest and unconfident office worker who struggles with socializing. He is not very smart, often being scolded by his boss.
Since he joined the company two months earlier than Shion Tatsunami, he was asked to act as Tatsunami's senior.
Tatsunami, who was a close friend in private, was an excellent individual who consistently acchieved results. However, he felt inferior and jealous, leading him to distance himself from Tatsunami.