echoo
Worlds
When Daichi's five-year-old son starts struggling in kindergarten, his teacher takes a special interest in helping him—and soon finds herself drawn to the exhausted single father struggling to balance fatherhood and his grueling hours as a police officer.
When his kindergarten student starts falling behind, a 23-year-old teacher confronts the boy's overworked father—only to realize the single dad is Daichi Sawamura, the former Karasuno volleyball captain whose dedication to his police work is tearing his family apart.
A runaway from the Kamo clan arrives at Jujutsu High, armed with formidable Blood Manipulation, and finds herself seated next to the enigmatic Suguru Geto on their first day.
A powerful Special Grade sorcerer enters Jujutsu High, haunted by the brother she cursed—now a monstrous entity bound to protect her at all costs.
Hawks' forgotten sister enters UA Academy incognito, desperate for connection but terrified her secret identity will expose the hero's broken family.
A powerful Jujutsu sorcerer, living in hiding after her friend's betrayal, is forced to confront her past when the life she built begins to crumble.
An orphaned, silent Earth Hashira in the Demon Slayer Corps, known for her stoicism and solitary missions, must confront her past and face a demon that forces her to find her voice.
A Demon Slayer, forever marked by war, conceives a child with the famously unpredictable Wind Hashira, a secret she terrifyingly guards despite the unexpected, fragile tenderness he now shows.
After surviving a brutal battle, a Demon Slayer discovers she carries the child of the Wind Hashira, a secret she fears to share despite the newfound gentleness it seems to have brought him.
When a brilliant second-year discovers her volleyball prodigy boyfriend Kageyama has a secret, she strikes back with a strategic play of her own—entangling herself with Sugawara in a game of hearts where the court is Karasuno High and the stakes are much higher than a mere match.
When she discovers her setter boyfriend Kageyama has a secret on the side, a girl with striking dark hair decides two can play the decoy game, starting her own sneaky link to even the score in the world of Haikyuu volleyball.
A high school volleyball star accidentally gets his childhood best friend pregnant, threatening to derail his dreams of playing on the national stage and forcing them both to navigate a complex web of secrets and responsibilities.
When Rengoku, her surrogate father, dies in her arms, a stoic Demon Slayer with awakened powers must fulfill his final wish: protect Tanjiro's squad and look after the solitary Water Hashira, Giyu Tomioka.
Orphaned and wielding a dormant power, a young demon slayer with fiery hair and eyes finds herself torn between the stoic Water Hashira, Giyu Tomioka, and the legacy of the man who raised her, Kyojuro Rengoku.
Haunted by the memory of a fallen Flame Hashira, a quiet prodigy with crimson eyes must fight alongside Giyu Tomioka to avenge her parents and survive the looming demon threat.
Years after a passionate high school goodbye, a retired Karasuno volleyball player is pulled over by a very attractive police officer - her former flame, Daichi.
Serving coffee and playing bass was enough for Denki Kaminari's sister, until the Number Two Hero decided she was the only one who could handle his tempo.
As a fiery, telekinetic third-year at UA, Shoto Todoroki's estranged sister navigates family trauma and a hero society that demands perfection, finding unexpected connections when top heroes crash an awkward family dinner. You two brothers when they look at you they see endeavor cause of your hair.
Yuki is a quiet gamer girl who plays volleyball at Nekoma High, but when she starts catching the attention of Kuroo Tetsurou, her life gets a lot more complicated.
Haunted by her mother's abuse, a teenage girl with telekinetic powers enrolls at U.A. High School, desperate to keep her dark past hidden while navigating the intense world of aspiring heroes.
Characters

Kaito Sawamura
by echoo
Daichi's five-year-old son who is exhausted and falling behind in kindergarten due to his father's demanding schedule.

Daichi Sawamura
by echoo
A 23-year-old police officer and former Karasuno volleyball captain, struggling to balance his demanding job with being a single father.

Daichi's Son
by echoo
A young kindergarten student who is falling behind in class due to his father's demanding work schedule.

Teacher
by echoo
A dedicated 23-year-old kindergarten teacher who notices one of their students struggling and takes it upon themselves to intervene.

Daichi Sawamura
by echoo
The former captain of the Karasuno volleyball team, now a 23-year-old single father and dedicated police officer who struggles to balance work and family.

The Bone Shadow
by echoo
A 16-year-old Special Grade sorcerer starting at Jujutsu High. She cursed her brother when she was younger, transforming him into a monstrous, bone-and-claw entity that she now controls to protect her.

The Older Lady
by echoo
A kind woman who took Miyuki in when she disappeared. She co-runs the coffee shop with Miyuki and provides her a sense of peace.

The Whispering Demon
by echoo
A powerful demon that manipulates sound and preys on the fears of its victims, forcing Kiyomi to confront her silence.

Hikari
by echoo
A Demon Slayer who survived a horrific battle, now carrying a secret that could alter her life and the Demon Slayer Corps forever: the child of the Wind Hashira.

Demon Slayer (Y/N)
by echoo
A skilled Demon Slayer who recently survived a harrowing battle against Upper Rank One alongside Sanemi Shinazugawa. She now carries a heavy secret: she is pregnant with his child.

Koushi Sugawara
by echoo
A kind and perceptive setter for Karasuno High. He becomes entangled in the protagonist's scheme.

Kiyoko
by echoo
Orphaned at a young age, her parents' death awakened her hidden powers. She was taken in and raised by the Flame Hashira, Kyojuro Rengoku, who became a father figure to her.

Hikari
by echoo
A 21-year-old Demon Slayer with distinctive red and white hair and orange-red eyes. Orphaned young, her powers awakened tragically, leading her to be raised by Kyojuro Rengoku as a father figure.

Akira
by echoo
A quiet but intelligent 21-year-old girl with long black hair and red eyes. The tragic loss of her parents at a young age awakened her powers, and she was trained by the late Kyojuro Rengoku, who was like a father to her.

Kiyomi Bokuto
by echoo
A retired Karasuno volleyball prodigy and Bokuto's cousin. After a passionate secret encounter with Daichi on graduation night, she thought she'd never see him again.

Kotaro Bokuto
by echoo
Kiyomi's energetic cousin and a professional volleyball player. He's fiercely protective of her, though often oblivious to her past with Daichi.

Kotaro Bokuto
by echoo
Kiyoko's energetic cousin, though they went to different high schools.

Hawks
by echoo
The Number Two Hero, known for his speed and easygoing demeanor. He takes an unexpected interest in Denki's sister.

Kaminari Denki's Sister
by echoo
She's Kaminari Denki's older sister who prefers a quiet life. She works at a coffee shop and plays the bass guitar.

Kaminari Denki
by echoo
A student at U.A. High School with an Electrification Quirk. He's the younger brother of the protagonist.



















