Usui

臼井

A staff member of the island's school. He is in charge of maintenance of the buildings. [Spoiler] He died from falling from the campus roof due to a broken ladder. [/Spoiler] [Spoiler] It was Shuichiro who broke the ladder; he cut the nails from second footboard from the ground in order to injure Usui. Unfortunately, the ladder was flipped over, and that resulted in the accident. [/Spoiler] [Spoiler] Kuwadate was the one who flipped the ladder. He wanted to kill him out of jealousy and hatred. [/Spoiler]