Play
On a scooter running in one direction is a gun-toting child. This is a terribly dangerous situation, but to the child it is just play.
Imagine a child riding a scooter with a gun having a good time. "Come play with me!" they shout. "No!" you yell back.
ゆう
あそ
None
Everything is play for youths (ゆう), even if it's a terrible, scary, not good situation like this one.
Imagine trying to explain to the youth that this is not play and that they should stop, but them youths can't stop playing. P.S. From the WaniKani staff to you: Don't let youths play with guns, please.