Mr. Ackerman is a teacher who's teaches high school students world history. He is considered the hottest teacher around due to his straight forward attitude and expression manners. 

Eren of course is the lazy type never wanting to do class work and continuously falling asleep. It brings a shock to peoples face seeing him actually attending school. 

Soon notified that he must pass his classes or he'll be held back. Not wanting to be left behind and seeing his classmates go ahead makes Eren sick to the pit of his stomach. He begins to start taking school seriously as Mr. Ackerman as his 'Private tutor..' soon secrets begin to unravel between the two males. 

Eren now noticing something quite obvious is everyone in class starts to notices the hidden bond between Mr. Ackerman and Eren. Most of them try not to jump to conclusion about to two..so they just think of it as Eren as a Teachers pet... 
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