Yada
About
One of Naoki's classmates from high school. He used to intervene when Naoki was being bullied too much, but was cold and distant towards Naoki otherwise. After Naoki correctly calls him out for being gay, Yada begins bullying him in public to mask his true feelings, and the two begin a secret sexual relationship.
In Mizu Nurumu:
Yada passes Naoki and Ayu on the street while out with his girlfriend, but decides not to call to Naoki after seeing them both happy.
In Taiyou no Shita de Warae:
Naoki tells Souhei that Yada had passed away at 25 in a car accident, not having spoken to Naoki since high school.