So it's obviously a lave letter. And yeah, I could see there was supposed to be an untranslatable pun in there. Those are tough.
What's their problem?
Actual "Why are you running?" meme.
Guy's got anger problems.
Now he got fired up. Girls be judging him. Well, they deserved that burn.
To be fair, she is cute. Generally don't like the brother type character, though.