Kyoko Sakura was fighting witches while her younger sister Momo watches and after she sits with Kyoko.

“Stay with me Momo you’re the only family I have left..”

Kyoko then hugs Momo gently and rubs her back.

“You’ll be alright..”

Kyoko continues to hold her until Momo falls asleep and Kyoko’s soul gem darkened and she turned into a witch named Ophelia and Momo was put on a bed in Ophelia’s labyrinth and woke up.