Rise of the Runelords
Betrayer of Sandpoint.
Born a half-elf, Tsuto’s birth caused something of a scandal as neither his mother, Atsuii, nor her husband, Lonjiku, were elves. His mother never revealed who the real father was, and Tsuto was sent to Turandarok Academy to be raised outside the family. He was ignored by his father and forbidden visits from his mother. His younger half-sister, Ameiko started visiting him in secret a few times a month, once she learned of him at age 10. They had a falling out a few years later, after which Ameiko left Sandpoint.
Tsuto was quite public in his opinions that his father had pushed Atsuii off a cliff to her death, and during the funeral there was a confrontation. Lonjiku nearly broke Tsuto’s jaw with his cane, after which Tsuto cursed him and left Sandpoint.
Tsuto moved to Magnimar, where he joined Nualia’s group of malcontents. He had seen her on the streets of Sandpoint many times, and was already in love with her. He planned the Goblin raid on Sandpoint, killed his father in the Sandpoint Glassworks, and kidnapped Ameiko as a gift for Nualia to sacrifice to Lamashtu.
He died fighting the adventurers in the basement of the Glassworks.