After having sex with both sisters, they changed back into their normal clothes. But right after they did so, they stopped, eyes widening slightly.
I tilted my head, noticing this. "What's wrong?"
"This feeling…" Yu An Yan muttered, glancing down at her hands in wonder. "My body… it feels a lot lighter and… somehow more powerful than before."
"I feel it… too…" Yu An Xue added, furrowing her brows. "It feels like… a new power is manifesting in my body…"
"Wait…" I cut in. "This can't be… Soulpower?"
"W-Wha-?!" Yu An Yan gasped. "Soulpower? Then that means, w-what we did, was…"
"Ahem…" I averted my gaze. "You two are surprisingly… er, what I mean to say is, I didn't expect that to be your favorite thing to do. How long have you been waiting for this…?"
"I don't know what you're talking about!" Yu An Yan shrieked in embarrassment and looked away, her sister doing the same.