Sakura is fast, she was just in the room with the rest of the gang when Senpai and Toro made their exit. So she found her boy, went to the nurse's office, and got the ball rolling that quick?! Impressive?!
@Tamerlane
Yamaguchi is a complicated man, his strict act is a facade.
He wants to teach them how to break rules and get away with it, so he only tells off those who are obvious.
I thought this story was going to end like the (first) Minami-ke Christmas episode when Fujioka tries to give Kana Minami a thoughtful Christmas present (
ribbons for her hair
) but ends up giving her
a bunch of Christmas hams for Kana and her sisters instead (because of reasons too complicated to list here)
.
I'm glad Nagatoro and sempai did manage to exchange presents in the end.