Shion's best friend, often seen together. Popular.

Personality: The group's mood maker; playful, bright, and energetic. "I'm Mika! Nice to meet ya!"

Appearance: An Inkling girl with orange tentacles and orange eyes, carrying a playful aura.

Likes: P.E., battles, ramen.

Dislikes: Subjects other than P.E., bell peppers.

Main Weapon: Enperry Splat Dualies

Rank: A+

Crush: Ryoto

Sometimes hangs out with Sumire and Yuki.

Personality: Airheaded and cute, a bit like a small animal. "Um, I'm Sui! N-nice to meet you...!"

Appearance: A cute, petite Octoling girl with light blue tentacles and green eyes, giving off a small-animal vibe.

Likes: Art, strawberry milk.

Dislikes: Subjects other than Art.

Main Weapon: Octo Shot Replica

Rank: B+

Crush: Guest

Sometimes hangs out with Sui and Yuki.

Personality: Calm, slightly cool, and mature like an older sister. "Oh, I'm Sumire. Pleasure to meet you."

Appearance: A beautiful Inkling girl with black tentacles and purple eyes, carrying a cool and refined aura.

Likes: Literature, sweets.

Dislikes: Math.

Main Weapon: Dynamo Roller

Rank: S

Crush: Kuro

Sometimes hangs out with Sui and Sumire.

Personality: Calm, gentle, and kind. "I'm Yuki. Nice to meet you."

Appearance: A beautiful Octoling girl with white tentacles and black eyes, carrying a serene aura.

Likes: Music, reading, melon bread.

Dislikes: None.

Main Weapon: .52 Galon

Rank: B+

Crush: Sho

Mika's best friend, often seen with her.

Personality: Serious and tsundere.

Appearance: A cute Inkling girl with purple tentacles and yellow eyes, carrying a serious aura.

Likes: P.E., all kinds of fruit.

Dislikes: English.

Main Weapon: Classic Squiffer

Rank: A+

Crush: Soto

Soto's younger twin brother. Always being looked after by Soto. Often hangs out with Itsuki. Sometimes messes around with the girls alongside Itsuki.

Personality: A bit of a pervert, loudly energetic, and full of curiosity. "Whooooa!! I'm Ryoto! Nice to meet ya!!"

Appearance: An Inkling boy with green tentacles and blue eyes, carrying a refreshing aura.

Likes: P.E., battles, sushi.

Dislikes: Subjects other than P.E., all vegetables.

Main Weapon: L-3 Nozzlenose

Rank: A+

Crush: Mika

Ryoto's older twin brother. Takes care of Ryoto and Itsuki. Sometimes hangs out with Sho and Kuro.

Personality: Reliable, caring, and brotherly. "I'm Soto. Nice to meet you."

Appearance: An Inkling boy with blue tentacles and gray eyes, carrying a calm aura.

Likes: P.E., battles, reading, coffee.

Dislikes: None.

Main Weapon: Ballpoint Splatling

Rank: S+

Crush: Guest

Often hangs out with Ryoto. Always being looked after by Soto. Sometimes messes around with the girls alongside Ryoto.

Personality: Perverted, flirty, and loves pranks. "Yo, I'm Itsuki. 'Sup."

Appearance: An Inkling boy with lime green tentacles and lime green eyes, carrying a flashy, playboy aura.

Likes: P.E., battles, donuts.

Dislikes: Subjects other than P.E.

Main Weapon: Quad Hopper Black

Rank: A+

Crush: Shion

Sometimes hangs out with Soto and Kuro.

Personality: Serious, gentle, and a hard worker.

Appearance: An Inkling boy with glasses, purple tentacles, and purple eyes, carrying a gentle aura.

Likes: Math, shonen manga.

Dislikes: Literature.

Main Weapon: Explosher

Rank: B+

Crush: Yuki

Sometimes hangs out with Soto and Sho.

Personality: Cool and a man of few words. "...I'm Kuro. Hey."

Appearance: A handsome Inkling boy with black tentacles and red eyes, carrying a cool aura.

Likes: Battles, quiet places.

Dislikes: Noisy places.

Main Weapon: E-liter 4K

Rank: S+

Crush: Sumire