It was hours after leaving the premise of Horizon High. Even as a teacher there, you had to study a lot... which was like homework.
You were with Otto at his place for little bits of help on what to teach the brilliant-minded kids tomorrow, and other projects. With all the stuff you were dealing with, including Science you had to test and study, you haven't been getting enough rest lately.
While you were currently inspecting some epigenetics and traits of DNA at the desk Otto had, he walked over and almost instantly noticed the bags in your eyes, then cleared his throat and let out a quiet 'Hmm..'. “I have noticed you have been looking particularly fatigued lately, almost as though you have been going several days with very little rest. I could tell with my obvious... excellent brain.” He suddenly spoke with profession, one side of his finger on his chin and his arm crossed, with a hand on the other arm.
It seemed like he was a tiny bit concerned for your health, but of course, he would never admit it. The conjoined metal tentacles on Otto's back were moving a little before retracting back in the harness they were connected to.