(informal) must, have to / (informal) if one doesn't...

呷る: to swallow something in one gulp; to chug / 煽る: to blow something, to cause something to move by movement of the air; to fan; to work someone up into doing something, to instigate or inspire; to flap

see someone for the last time

a scorpion (any of various arachnids of the order Scorpiones)