The twins are still looking for a pack and to get on Scott's good side they're flanking him as protection against the demonic ninjas. Scott teases them with his True Alpha-ness.
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Stiles, perhaps the dark spirited Nogitsune Kitsune the Oni are after, reaches into the chest of the Oni and tears his heart out. It is released in the form of a firefly.
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An overwhelmed Stiles turns to Melissa for help and calls her mom as he drifts off to sleep, causing millions to say, "Awwwwww...."
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What was it about this scene? It was so touching! Yes, Kira not only wanted to see Scott in his wolf form, but lovingly caressed his face as well.
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All Kira had to do was touch Scott's face and reveal she's one of the 13 trickster spirits known as Kitsune to really catch the eye (and lips) of Scott!
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The Oni sniff around Kira, but Scott assured her it was alright. She's not a bad guy. He was right! That's why he's a True Alpha. And stuff.
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Um... They have a werewolf, too! Isaac's ace wasn't such a great card after all. Embarrassing!
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When Isaac got worried he'd look like a boy while trying to do business, Allison showed him how to feel like a man. HOT!
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Teen Wolf Season 3 Episode 17 Quotes

I'm a True Alpha. You have no idea what I can do.

Scott

Scott: What was behind the mask?
Argent: Darkness. Absolute darkness.