Mamiko

A High Priestess / sacrifice who lives sealed in a shrine no normal people could found. It is said that her purebreed magical power descents from Amaterasu and is able to ward alien entity off the earth with her prayers. After Tyo rescued her, government decided to relief her out of her job as the threat had locked himself inside Tyo as his alter ego. 

She wears red jerseys everywhere. A note that Mamiko is not her real name, it was a nickname Tyo gives to her because she met him in a miko outfit and finds it cute that she wrote it on her official document now.  She likes video games, as it was her only way of entertainment in the shrine. The shrine paid for her gacha expenses, so she now struggles being a f2p to not burden Tyo--- and so she looked for a part time job just to supply her gacha funds.

By the time of HiFuMi NovA! he travels the galaxy with Tyo as his wife and protector, while Lunachi and Blanche becomes intergalactic police.