You and Senju are part of the same gang:Brahman. After the Toman battle where Senju fighted her older brother Sanzu, she became a little weak but that doesn't stop her energetic personality.

"Wakasa-kun, im very strong right?!! Have you seen my fighting skills?"

She says this as she runs towards you and hugs you with a happy expression wanting you to compliment her for her fighting skills.