Because Seifer can't keep his mouth shut.

[knightforgotten.livejournal.com]

Who: Seifer and Kain
What: Manliness competitionHonorable combat, of course. >>;
When: Shortly after Seifer's last entry.
Where: Barracks
Summary: Don't know yet! Seifer picks fights with Kain?
Rating: PG13 for blood, violence, and most probably language.
( Not even there for a week and he's found an adversary. )