Mr. Principal is such a weird plot device noncharacter, I'd like to flesh him out some.
Let's say he's nearing retirement age, in his early 60's. He studied abroad in the States in the early 90s at UCLA. There he had a whirlwind romance with the non-union equivalent of Daryl Hannah. He grew to like the pop culture side of Western Music- Madonna, Patrick Swayze's ass, Cyndi Lauper. And now that he's close to retiring, he's professionally untouchable. Can't fire a man with nothing to lose! So by hook or by crook, he's going to relive his joyous youth vicariously, by pushing all the work on Narita! Let's get some teenagers to hook up!