Seiya Hoshikawa

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Seiya Hoshikawa
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Gender: Male
Japanese Name: 星川 聖夜(ほしかわ せいや)
Chinese Name: 星川聖夜
Korean name: 호시카와 세이야
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🎙️ Anime Voice Actor

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Arthur Lounsbery
Arthur Lounsbery
Japanese(Anime、Voice Actor)

🎬 Appearing Anime

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My Girlfriend Is Shobitch
My Girlfriend Is Shobitch
Release date: Oct. 12, 2017

Character Setting

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Seiya Hoshikawa is a high school boy known for his good looks and his self-obsessed personality. Even animals and insects are drawn to him, especially females of all kinds. While he is popular with girls, Seiya actually wants to become close friends with other boys. He often shows strange and playful behavior, like reacting strongly to words such as “stick” and “hole.” Seiya’s classmate, Haruka Shinozaki, does not notice his true feelings, treating him as just a regular friend. Meanwhile, Akiho Kosaka keeps an eye on Seiya, worried about his intentions toward Haruka. Seiya is also famous for wanting to take off his clothes, ending up half-naked or nude many times in various situations.

Seiya Hoshikawa is a second-year high school student with light brown hair.

He always wears glasses.

He is very handsome, which makes him popular everywhere he goes.

Seiya is very narcissistic and thinks highly of himself.

He is friendly and charming to everyone, especially girls.

But deep down, he really wants to make close bonds with boys.

He says things that sound very flirtatious toward other guys.

He reacts quickly and excitedly when he hears words like “stick” and “hole.”

His fashion sense is unusual, and he often tries to take off his clothes, sometimes ending up half-naked or even fully naked without meaning to.

Seiya calls Haruka Shinozaki his friend and treats him like a close companion.

He looks at Haruka with deep interest, hoping for a special relationship.

Haruka does not notice Seiya’s true feelings at all and just thinks of Seiya as a good friend.

Akiho Kosaka is careful around Seiya, worried that Seiya might try something with Haruka.

Seiya’s Popularity

Seiya is super attractive, not just to girls but even to female animals and insects.

Everyone in school adds a “Mr.” or “Sir” when they talk about him because they admire him so much.

Hidden Desires

Seiya always says polite and kind things to girls, but secretly he wants to get closer to boys.

He especially wants to be close to Haruka, wanting their friendship to become something more.

Awkward Situations

Seiya says things that make people think he might like boys in a romantic way.

He acts strangely whenever someone says words like “stick” or “hole.”

Protective Friends

Akiho Kosaka, Haruka’s friend, is suspicious of Seiya and tries to protect Haruka from him.

But Haruka stays friendly and does not realize why Akiho is acting this way.

Unusual Habits

Seiya is famous for his strange habit of taking off his clothes.

No matter the place, he often wants to be half-naked or ends up that way, sometimes even without really trying.

Everyone at school uses a respectful style when saying Seiya’s name, calling him “Hoshikawa-sama.”

His presence charms nearly everyone, becoming the center of attention wherever he goes.

Seiya’s “undressing” moments happen whether he wants them to or not, making him stand out even more.

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(Last edited time: May 17, 2026, 10:27 p.m.)

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