Natsumi Kuzuryu

"'Why, Fuyu? Big brother. I loved you so much. So why did you let me die?'""— The Void, posing as Natsumi" Natsumi Kuzuryu is a character in the Kyokoverse. She was the younger sister of Fuyuhiko Kuzuryu, and was already dead by the time the narrative started.

She attended Hope's Peak Academy as a Reserve Course student, but attributed to herself the title of Ultimate Little Sister.

Appearance
Natsumi's appearance in the Kyokoverse stays exactly the same as in canon, with long blond hair, green eyes, prominent pink cheeks, and the Hope's Peak Academy uniform. She looks somewhat similar to Kaede Akamatsu.

Personality
During Another Episode: Kuzuryu, Natsumi is painted as a caring and energetic young girl, who seeks to support her older brother, Fuyuhiko, in any way she can. This has extended to her starting to dub herself the Ultimate Little Sister, which makes Fuyuhiko uncomfortable, because, deep down, he thinks the roles should be reversed: to him, she should be the Ultimate Yakuza, and thus the heir of the Kuzuryu clan.

She also shows herself to be quite overconfident due to her status as a Kuzuryu, stating that "no one would be stupid enough to follow yakuza", but, at the same time and a bit paradoxically, she's cautious of any enemies. This has directly led to the event that ended up killing her.

The Void's impersonation of Natsumi still retains her sweet disposition towards Fuyuhiko, but with a side of resentment, instilling in him the belief that he was responsible for her death.

The Rise and Fall of the Frog Division
Natsumi's death is briefly mentioned by Fuyuhiko in a conversation he has with Akane Owari. While addressing Akane's feeling that she was responsible for the Swag Ass Roblox Rock Incident, he tells her that, when Natsumi died, he "kept trying to find ways to blame [himself]", and "doesn't want [Akane] to taste this feeling".

Akane's Birthday
In a confrontation Fuyuhiko has with the Void, it impersonates Natsumi, in an attempt to lure him into the abyss. This leaves him in tears and struggling to believe she's the real Natsumi, and the Void comforts him, wiping away his tears and saying kind words, only to then impale Fuyuhiko in the stomach and leave him for dead.

The Void is then sealed by the collective work of Fuyuhiko, Kaito Momota, and Shuichi Saihara, with the three of them geccing to pretty much cast Divine Word on it.

Another Episode: Kuzuryu
In this mini-arc, Fuyuhiko relives Natsumi's death in full detail. Three years before the events of the Kyokoverse, the two siblings were walking home from school, when a hitman following them, later found out to be hired from inside the Kuzuryu clan to kill Fuyuhiko, denounced her position by trying to take the shot, but having her gun jam before she could do it, and cursing out of frustration.

Fuyuhiko charged straight ahead to her after noticing her presence, and Natsumi went after him, worried for his life. The hitman, ready to go now, started blasting until the gun was empty, just as Natsumi told her older brother to run, and didn't hit the intended target: since Natsumi was right in front of Fuyuhiko, she took all the shots, including one through her brain.

The initial reaction Fuyuhiko had was to drop to his knees and cry, but, realising his window of opportunity as the assassin had to take her time to reload her gun, he honoured his little sister's final request, and ran away to safety. The assassin, after cursing Natsumi for saving the target's life and expressing worry for her own life as she failed to kill him, decided to try again, but it was too late, as Fuyuhiko was already running. She started blasting, but only hit his right shoulder.

After the flashback to Natsumi's death was over, Fuyuhiko started dreaming of the Void impersonating Natsumi, this time covered in her fatal wounds. The fake little sister was much more resentful than in her first appearance, claiming Fuyuhiko was the direct responsible for her death, and lamenting the fact he let her die, with a smile on her face and tears in her eyes. She impaled him again in the dream, and that's when he woke up.

Roadchip would later reveal that the person who sent the hitman in an ultimately failed attempt to claim Fuyuhiko's life was his cousin, Yokutaro Kuzuryu, who got tortured, expelled from the Kuzuryu clan, and forced to work forever in customer service as punishment.

Another Episode: The UNO Argument
A few weeks prior to her death, Fuyuhiko and Natsumi reenacted this video. Minus the slurs. And they were talking about their shared Xbox, instead of separate ones.

Fuyuhiko Kuzuryu
Natsumi dearly loved Fuyuhiko, and he regrets never properly showing her that the opposite was true as well. She was loyal to her older brother to a fault, not hesitating in sacrificing herself for him, and extremely supportive of him in his attendance to the Main Course of Hope's Peak Academy. Fuyuhiko, on the other hand, firmly believed Natsumi should've been in the Main Course instead, and shows anxiety about being the heir to the Kuzuryu clan.

In Camp Wiyog, it was revealed that Fuyuhiko occasionally called Natsumi by the affectionate nickname of "Nat", and that they had a let's play channel on YouTube together, the title of which is unknown.

As the Void
— After first morphing into Natsumi's appearance — Trying to lure Fuyuhiko into the Void — Shortly after impaling Fuyuhiko — Approaching a passed out Akane to kill her — In Fuyuhiko's dream, just after the flashback about Natsumi's death was over
 * "You know I love you, Fuyuhiko. Just don't resist, big brother."
 * "It wasn't your fault. We both know that. Just close your eyes. I can help you."
 * "Good, big brother. Just go to sleep."
 * "Oh, I nearly forgot about that one. Makes things easier for me."
 * "Did you enjoy that show, brother? It’s your fault. And I’ll never let you forget."

As herself
— During the UNO argument — Referring to their time at Hope's Peak Academy — Trying to comfort Fuyuhiko, after he seemed sad — Trying to ease Fuyuhiko's anxieties about being followed — Natsumi's last words
 * "WE DON'T FUCKING HAVE UNO, MOTHERFUCKER! WE DON'T HAVE TWO, WE DON'T HAVE THREE, WE DON'T HAVE FUCKING FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, OR ELEVEN!!!!!!"
 * "It'll be fantastic when I'm there with you! I’ll support you at Hope’s Peak as Ultimate Little Sister!"
 * "You know I'll beat the shit out of anyone who dares to get in your way."
 * "No one's stupid enough to follow yakuza after all!"
 * "Fuyu, run!"