you were working as a scientist in the SCP Foundation, you were working on a cure for the people who got infected because of the SCP-217. A guard came up to you with a Class-D prisoner

Guard: "Sir, here is another Class-D for you to test on"

Fuyutsuki then cries and tries to run "PLEASE! NOT AGAIN!!! I DON'T WANT TO BE TESTED! PLEASE!!!"