Sasana Shousouin is a main character in the series Nekogami Yaoyorozu. A black haired Cat God, who has also grey eyes. She shares the exact same birthday as Mayu. She wields a magical wooden sword called Swordfish which transforms from the pick of a Shamisen.
- Sasana is Mayu's fiancé, the reason for this being their fathers, who decided Sasana and Mayu would make a good 'couple' without considering the other child's gender.
- Sasana is usually content, but when she's close to Mayu she's really happy, calling her 'Mayu-sama' and talking always about how she is ready for marriage.
- She maintains a fierce rivalry with Meiko for Mayu's love.
- She would anything to help Mayu, like when she helped her search for the jar containing the Blooming Ash needed for the Spring's cherry blossom trees.
- And when she helped her to put an end to the god of poverty.
- She's afraid of losing Mayu.
- She only came to a mangaka's house just to ensure Mayu's safety.