Yamada

The protagonist of this work. He is a student. He has a strange disease that causes severe pain in his balls unless he ejaculates every three hours, and he is hospitalized with broken hands. He is not a pushover and is easily influenced by the atmosphere and mood of the place. Basically, he is a poor and sneaky person, but he also has a tendency to get upset. However, he is quickly beaten down by a counterattack...... He is the type of person who reflects on what he has done, but can't apply it to the next time.