Kuromaru

Author
✒️Edit
Kuromaru
Chat
Japanese Name: 黒丸
Chinese Name: 黑丸
Korean name: 쿠로마루
I this character

🎙️ Anime Voice Actor

Edit
Ayumu Murase
Ayumu Murase
Japanese(Anime、Voice Actor)

🎬 Appearing Anime

Edit
SWORDGAI The Animation
SWORDGAI The Animation
Release date: March 23, 2018

Character Setting

Edit

A boy named Kuromaru is often bullied by his classmates and has a deep longing for friendship. He is especially sensitive to the word “friend” and clings to its meaning.

Kuromaru is emotionally fragile due to being bullied and craves acceptance from others.

He is quick to form attachments to those who offer him kindness, showing strong loyalty.

He develops an unhealthy obsession with the concept of friendship, to the point of seeking it from inanimate objects.

Kuromaru is both vulnerable and earnest, drawing others to want to protect him.

After feeling isolated, Kuromaru tries to find companionship with the Iron Maiden, an exhibit.

Desperate for a friend, this longing leads him to become a Weaponized Demon.

He is rescued by Himiko, who offers him guidance and helps him escape his dark fate.

Kuromaru becomes attached to his caretaker, Gai Ogata, and trusts him deeply.

Over time, Kuromaru learns to control his ability to transform into a Weaponized Demon at will.

He later saves Rie Matoba, who was defeated by Shin Matoba, and they eventually become friends after the final battle.

Kuromaru can transform into a Weaponized Demon when his emotions overwhelm him.

With practice, he gains the ability to trigger this transformation intentionally.

His powers reflect the intensity of his desires and emotional state.

Kuromaru’s longing for friendship is the driving force behind his supernatural abilities.

Kuromaru looks up to Gai Ogata, viewing him as a protector and caring figure.

Himiko acts as a guide for Kuromaru, helping him overcome his darkness.

His relationship with Rie Matoba evolves from saving her to forming a true bond.

These connections help Kuromaru move past his loneliness and embrace genuine friendship.

Throughout his journey, Kuromaru matures from a lonely, desperate child into someone capable of forging real friendships.

He overcomes his dependence on hollow forms of companionship and learns the value of trust and kindness.

(View edit history)

(Last edited time: May 20, 2026, 12:39 p.m.)

💬 Community Discussion

Talk about this anime with people who actually care.

Source: ()
💬 Reply 🗑 Delete
Anibase.Net
The world's largest anime community, which has already been visited by over 100 million people.

Share

Other Characters

View All
Kiyomi
Kiyomi
Gender: Female
Voice Actor: Hitomi Harada
Midoriko
Midoriko
Gender: Female
Voice Actor: Ayane Sakura
Gai Ogata
Gai Ogata
Gender: MaleAge: 16
Voice Actor: Ayaka Nanase、Yuuto Uemura
Himiko
Himiko
Gender: Female
Voice Actor: Maaya Uchida
Sayaka Ogata
Sayaka Ogata
Gender: Female
Voice Actor: Yuuka Aisaka
Kyōka Kagami
Kyōka Kagami
Gender: Female
Voice Actor: Rina Satou
View All