[@Shadow Dragon][@Vampiretwilight]
"I thought you were my classmate!" He said surprised. "We generally behaved in this way, like, we made pranks each other, for example, entering in my or his home and be a bit assholes, you know, the classic man-talking style ahah" He laughed. "I'm sorry if I bothered you" He said sincerely. "... so, are you gonna offer me a cup of tea?" 
The other guy lowered his guard. Martin pulled out a knife and skewers him in the belly, then he left the house running.