Tsuto Kaijitsu

Tsuto (now deceased) was the family scandal of the Kaijitsu family. His mother was human, as was her husband Lonjiku, but Tsuto was a half elf. He had one (half) sister, Ameiko (agreed to be Lonjiku's legitimate daughter).

Involvement with Goblin Attack on Sandpoint
When Amieko went missing from the Rusty Dragon, a note apparently from Tsuto was found in her room asking that she meet with him at the Glassworks to discuss Lonjiku's potential involvement with the goblin attack on Sandpoint. When the Drunkards investigated the Glassworks, Tsuto was found to have been working with the goblins and orchestrated the death of Lonjiku. Tsuto was apprehended by the Drunkards, who discovered Tsuto's journal.

The journal confirms that Tsuto was in love with Nualia and helped plan the attack to steal the Ezakien Tobyn's bones for a ritual which will turn Nualia into a demon. Apparently, her arm had already been transformed. The journal mentions the Thistletop goblin tribe, and chief Ripnugget, as well as a potential upcoming attack on the town with many times more goblins than the initial attack.

The journal also hints at Quasit (a type of demon, albeit a weaker one) being somewhere in the smuggling tunnels below the Glassworks, and Nualia apparently offering Sandpoint up as an offering to "Lamashtu" to release "Malfeshnakor" although the Drunkards are unfamiliar with these names.

Death
With Ameiko's blessing, Tsuto was handed over to the Sandpoint Town Guard by the Drunkards. While awaiting trial, Tsuto was apparently attacked in his cell by rats, and eaten alive. No explanation has been given as to where the rats came from, or why they would attack Tsuto and no other prisoner.