Utawaka Katsura

When 17-year-old Makoto Konno gains the ability to, quite literally, "leap" backwards through time, she immediately sets about improving her grades and preventing personal mishaps. However, she soon realises that changing the past isn't as simple as it seems, and eventually, will have to rely on her new powers to shape the future of herself and her friends.

Tsukishima Yui and 5 other girls were summoned into the Edo period by a mysterious stones and each one of them had a power to protect people from evil and yui's power were ''words'' her hope-giving kind words.