While she tends to burst into laughter pretty easily, Yukiko's first outing in the Duelling League elicits no such thing - well, no, Halley's emo whining is actually pretty hilarious, but the heir of the Amagi inn has enough manners to not burst out in laughters for those things. Halley isn't even one of Yuki's friends, for starters! And, more to the matter, Yukiko can teach him a lesson in humility pretty quickly. With the evasion brought by the Miori Shirt, she can dodge Halley's spells without much trouble, and she can pressure the psychic kid pretty easily with a healthy juggle of Agidynes and Diarahans, forcing the boy to spend his valuable resources and limited sanity pretty quickly. Then, once he's vulnerable, a single Amagidyne (pardon the pun!) will end the fight. Halley is about to see what people mean about the traditional Amagi room service, and it's by no means a teenage dream come true!