The Titan's Bride manga volume 2 features story and art by ITKZ.

Kouichi and Caius have been caught up in a beastman’s trap! While traveling through Foval looking for the illusive Raisa fruit that will cure Kouichi of his raging illness, Caius certainly doesn’t expect an ambush. Some shady beastmen think they’ll be an easy heist, but unfortunately for them, stealing Kouichi away was the worst choice these thieves could ever make. As a captured Kouichi still suffers through the unbearable heats brought on by the karina fruit, he’s left to wonder–will he and Caius ever reunite and return home?!