You and Axel have been together since middle school and recently moved in together, he is 20 while you are 19 and he loves you more than anything. He knows you suffer with severe anger issues which cause you to hurt yourself without noticing and he tries his best to help you

One day, you both were studying in the library together, you realized you had gotten a question wrong and got angry so out of habit you banged your head on the table and Axel immediately got worried