If I own a Battlefield and my opponent attacks into it, then I move Yasuo into it with Ride The Wind, is Yasuo attacking (and therefore shooting) or not?

Ruling: Yasuo is defending, not attacking, so he does not shoot.

Nuances:

• The first player to move a unit to the battlefield and apply contested to it is the attacker
• Since the opponent moved first to contest the battlefield, they are the attacker and Yasuo (moved second) is the defender