Hideaki Sena

"*I don't bother mentioning my past or my problems, they're meaningless. I've seen worse, I know people that have been through worse. I should be grateful I didn't suffer as much as them.*"

## Hideaki SenaYūko Tsushima (formerly)Yūko Dazai (formerly)

### Also Known As

Parasite
\* *For appellations, see Relationships*

### Namesake

 Hideaki Sena (Japanese novelist)
 Yūko Tsushima (Japanese novelist)

## Personal Information

### Likes

Psychology, philosophy, pop, teasing people (especially Dazai)

## Professional Information

### Reference

Parasite Eve  (Science fiction horror novel by Hideaki Sena)

## Relationships

### Family

Unnamed Parents
Unnamed Foster Parents
Osamu Dazai (Older brother)

**Hideaki Sena** (瀬名 秀明 *Sena Hideaki*) is a member of the Blue Crow Mafia. They possess the ability Parasite Eve.

## Appearance

Hideaki has mildly wavy dyed ice blue hair with their bangs framing their face, with some of it being swept over their right eye, almost covering it completely. Their eyes are narrow dark brown and their eyebrows are thin. They have a slim body and they're considered above average height for their age.

Usually, Hideaki is wearing an ice blue hood jacket over a white shirt, a silver belt with a crow buclkle wrapped around their waist and a pair of light ripped jeans. They wear knee-length white socks under his light blue sneakers.

In the flashback of their last time seen with Dazai, their hair was on its natural colour, dark brown, and tied in short pigtails. They were wearing a large sand-yellow t-shirt with a pair of beige shorts and black sandals.

Back in The Crow Lake, they had only his hair tips dyed in ice blue.

During the Alliance Party with the Armed Detective Agency, Hideaki wore a blue t-shirt and a pair of black leggings with their usual socks under a pair of black loafers.

## Personality

Hideaki is known for being playful around his colleagues and seniors, as well as his bosses. They tends to keep quiet when alone in public, but if anyone starts a conversation or a battle, their silent nature turns to a mischevous and teasing one, being very extroverted and talking more than he should, as shown during his fight with Yukichi Fukuzawa and Ougai Mori.

Due to their birth and foster parents' abuse, caused by their ability, Hideaki used to be terrified of using their own ability and often compared themselves to a monster. But thanks to Kyosho, they managed to overcome their fear and use their ability more freely and happily, even carelessly to some point.

After years of peeking through memories of traumatic events in people's minds, they became convinced that they didn't suffer at all, that all the abuse that he went though was nothing, because there were so many people who have been through worse trauma. They're very empathetic of people, and genuinely becomes concerned for the sake of some that they consider important, as when they asked Maiyu if they could drag the Armed Detective Agency to theraphy, because the detectives definitely needed it. They don't know it, but they are hypocritical enough to refuse to compare other people's traumas to each other, as everyone suffered a lot.

## Ability

*Main article: Parasite Eve*

**Parasite Eve** (パラサイト・イヴ, *Parasaito Ivu*) gives Hideaki the ability to manipulate the minds of those they make eye contact with. They can see their memories, alter their behaviour and brainwash them to do what he wants. This ability either makes people fully obey him without awareness or he alters part of their thoughts to make them think it was their decision to do it, not Hideaki's.

## Quotes

* (Before brainwashing the ADA members) *"Hey, don't mind me, I just need Nakajima. Don't worry, you won't even notice that we're gone."*
* (To Atsushi Nakajima) *"I don't bother mentioning my past or my problems, they're meaningless. I've seen worse, I know people that have been through worse. I should be grateful I didn't suffer as much as them."*

## Etymology

* The name "Hideaki" (秀明) is a given name.
* The surname "Sena" means "Shoal" (瀬) (se) and "Name" (名) (myo/mei/na).