Transition
Going from a scooter to a helicopter that's big even for yourself (oneself), is a huge transition.
せん
うつ, みやこがえ
None
You decide one transition isn't enough, so you transition to a centaur (せん) too. Now you're a big half horse-half human creature and you'll fit in the big helicopter better.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.