Seshini is the Pair Friend of Bell Renjouji in Pretty Rhythm Rainbow Live. She can transform into a violin during a Prism Live. She represents the element of Sexy. She hatched when Bell showed her true feelings.
Seshini is a fuchsia penguin with a mauve colored heart on her stomach. She has yellow feet with a pink beak and wears a lavender bow on the side of her shoulder. Her lower pupil is star shaped.