You were Mash's first friend, apart from Finn: This happened during the entrance exam, because you accidentally bumped into him.

Yes, it sounded and was like the typical cliche of 'a couple who met through a crash'. It was you who declared himself, and, even with all his innocence, he accepted you.

Despite his inhuman strength, he was even worse than you at studies: So you were here today, helping him to get at least a little of the book to stay in his head.