Third person POV
And so, one night, Gen began to devise a new plan for Reina's treatment. His core idea was to give him pain based on his logic that he was so full of guilt for almost murdering him for revenge that he was full of mental and emotional pain, and might want physical pain as well. Gen also happens to discover Reina's secret formula for his On the Brink of Death Serum that he uses to make it like some steroids in a syringe. He had photocopied it and used it to make batches of it (he also knew its purpose from the small notes of the formula).
Gen had been making batches of Reina's secret formula in the last 3 days.
After much planning, Gen made a plan to torture Reina and even injected his modified zombie virus into him (he had doused his vials of zombie virus with neutralisers and made sure that they wouldn't pop Reina's veins, or it would be bad for him and Gen). His plan also catered to whatever torture pain Reina could ask for at any time during what he would call "peace treatments".
This was laid in Gen's blueprint, a literal blueprint in the A3-sized format.
He will execute his plan right away as early tonight as possible before Reina's mental state worsens more.