Thoma's time on the Huckebein Warship. He ends up learning all the horrors of the Eclipse from the Fortis and is now aware of what he will eventually turn into, is caught in the crossfire between the Huckebein and Section Six and triggers the Divide Zero, and his Eclipse symptoms take a turn for the worst. So what does he decide to do? He comes to conclusion that he has become a monster and opts that he would end his life instead of taking lives. He says this in front ofSubaru before leaping off the ship. Keep in mind it is implied Thoma is only two years older than Vivio note Actually three years older. Note that ViVid set two years before Force, and Vivio is ten years old. So that means Thoma is 13 years old, by the time of ViVid(and one years older than Einhart, if you counting her cameo in Chapter 17).