What kind of title is this?: Manga.
How many volumes are there?: 2 volumes are listed.
How many chapters are there?: 18 chapters are listed.
Where can I read it?: Reading links are listed for Seven Seas Entertainment, Official Site. Check availability in your region.

Synopsis

About Fragtime

In this light science fiction romance manga, Moritani Misuzu has a unique power: for three minutes each day, she can stop time. Her life changes when she uses that same power to peek at a beautiful classmate’s underwear. To Moritani’s surprise, this classmate—Murakami Haruka—is immune to Moritani’s time-freezing technique. Bound together by their odd powers, the two girls begin to grow closer…and find that it’s more than their strange abilities attracting them to each other. (Source: Seven Seas Entertainment) Includes chapter 0.

Ecchi Psychological Romance Slice of Life Supernatural