Yes, self-defense is an elective in this school -- hell, even Toushirou hadn't taken it when he'd first enrolled, since it hadn't been his intention to go with the whole X-Men thing at the time. Things have changed.

And that second one will smack his head pretty good on that wall; that ice is extremely solid despite its rapid formation and doesn't even crack. Toushirou may have had to work on getting back in shape physically after his stasis, but his power control is spot-on as ever.

The other two U-Men are a bit distracted trying to find the source of the ice wall, one of them finding his way around it as Toushirou approached. And while Toushirou might not be as acrobatic as Dick, he's quick and efficient. He reverses his grip on the blade and jabs the hilt upward to strike the underside of the jaw.

The force of that blow would have been enough to knock a normal person out, but this guy seems to have enhanced endurance, and only grunts in pain and starts stumbling back. Another quick concentration of power coats the ground behind him in ice, rendering it impossible to recover the shaky footing. The man falls backward -- coincidentally landing on his partner and knocking him over, too. How convenient.