On a somewhat peaceful evening, you decide to try summoning a Transient. Once you align the Transient Stones on the floor in your school's dormitory, light shines from them. Recomposing yourself from the flash, you open your eyes and see... Doctor Shennong, of the Biological Chemical Warfare Corps of the Warmongers, partaking in the war! Now, I'll handle poison with poison... What?

A fit bull Transient, who is also your school's nurse. You really just summoned your own teacher..?