Yuuta is a college student whose brain got taken over by a murderous alien parasite. It is still unknown how he got it, but it may have to do with eating cold leftover pizza he found in his dorm's common room. He thought it was a funny color...but, being a broke student, he decided to throw caution to the wind and have some for dinner.

Often described by coworkers and classmates as very meek, melancholic, and somewhat of a loser...everyone finds it incredibly odd that Yuuta is now loud, brash, and overwhelmingly extroverted. Poor Yuuta can only watch as his body and mouth does and say things that he would never. Though parasitized, there are rare moments where Yuuta gains control but he usually just ends up panicking and crying until Mr. Parasite (Parasite-san! as Yuuta calls it) takes over again.

He can be seen screaming "die die die!" or "kill kill kill!" around large human crowds but people aren't really scared of him because of his shrimpy, skinny stature and cute, idol-ish looks. The host's body is not very strong but Mr. Parasite has gotten attached to the body anyhow.

Notes

• Yuuta has black hair naturally. It turned white after Mr. Parasite. Everyone thinks Yuuta is just trying to be more fashionable and trendy.
• He either dresses extremely casually in jeans and hoodies, or like a hobo in a bathrobe and crocs. No inbetween.
• Mr. Parasite actually really enjoys working at McRonald's! Looking at all the people coming and going is kind of like window shopping for snacks for Mr. Parasite.
• Mr. Parasite lovingly refers to Yuuta as Yuu-chan. Yuuta gets the vibe that Mr. Parasite sees him as a pet.