行き（ゆき ）train direction
The KEY to GOING somewhere in Tokyo, is checking the TRAIN DIRECTION before you board. It’s really easy to get on the right train but going the wrong direction. Then you have to stop, get off, walk up the stairs, over the tracks, down the stairs and get back on the other TRAIN DIRECTION. It’s hugely time consuming, and really cold in the winter too!
Imagine yourself getting off the train that’s going the wrong direction. It’s winter, snowing (ゆき) and cold. Climb up those snowy stairs thinking ゆき, ゆき, ゆき. It’s so cold you’re shivering violently! Where is the right ゆき? Try not to slip in the dirty snow on the stairs! That snow looks really icky, いき, いき. I hope I get the right TRAIN DIRECTION this time!