Oh good, a worthy challenger to his tomfoolery. He can hear the guy charging so makes quick work of darting out from under the cover of his trench to try to avoid getting tackled. He doesn't get that far, mind you, before he whips around to blindly launch the last two snowballs he has. The ammunition pile will just have to be abandoned, he's been ousted.

Seifer never was very good at holding a position before getting bored anyway. There is a booming laugh though, because someone actually playing along is great sport. Honestly he was expecting to get into a fight. This is a much better outcome.