Third person POV
In his room, while Gen was busy researching for the cure, Reina was looking at the small, non-glossy, paper photo. That photo was a photo of himself as a young kid. Reina felt so sad, thinking of his past self as an actual person.
"I'm sorry…" he uttered in a low voice while staring at it, "…I felt I had failed you. Sorry for killing you…"
He felt that by attempting to kill Gen for killing his parents, Reina felt as if he had betrayed and killed his past self metaphorically.
So, Reina stood up and placed his photo on an empty shelf on a bookshelf, before placing two small, white, wax candles in front of it.
He then lit flames on the two candles with a lighter.
The distance was far enough so the photo would not get burned by the two candles' flames.
After that, Reina stood in front of it in mourning, crying and shedding tears of sadness, regret, and grief.
Although the medicine and therapy worked, Reina's bad memories and PTSD returned and wreaked havoc in his mind and well-being like a tsunami, and this prompted him to introduce harsh punishments to himself to counteract the guilt and PTSD. But this was different because he imagined being tortured by Gen and his organization as his request for his peace in his stormy mind. They used their weapons and even their zombie vials and gas canisters. One softly said that the vials will be literally bitter when he asked for it to be shoved down his throat. He had these fantasies lingering in his mind, where he survives every time. For him, he passed the suicide ideation, calling it a coward's exit. When he had dreams, he was tortured by Gen and his men, who granted his requests while he could heal from his wounds. His other self, seeing and watching this behind a glass observation window, wanted to be in pain.
He wrote them in a separate notebook, a spiral-bound notebook with a black and red cardstock cover. He knew it was dissociation.