Sir Kay

Sir Kay (ケイ, Kei) is one of the Knights of the Round. Her King is Luna Artur, who often forces her to cosplay in various outfits and perform whatever task she requests to earn more money.

Appearance
Sir Kay is young woman with medium long blue hair and blue eyes.

Plot
Sir Kay gets summoned to help Luna Artur in her fight against Felicia and her knight Sir Gawain. However, Sir Kay is summoned in a sexy bunny costume and complains she is in it due to Luna forcing her to take escort job in order to gather money for her.

Felicia unable to keep watching this, orders Sir Gawain to attack. Having no sword on her, Luna gives her bastard sword, but Sir Kay gets send flying by Sir Gawain, however Luna gets saved by Magami Rintarou.

The next day, Sir Kay performs as an idol on stage, singing for her supporters as Luna had ordered her in order to get money from ticket sales. That night, Luna is ready to accept Rintarou as vassal, however Sir Kay can't trust him and is against it. She wants to fight him, but Luna likes what Rintarou is saying and quickly accepts him.