Season 1 (2024)

I HATE YOU and I LOVE YOU
8.5

October 6, 2024 • 24m

Puniru follows Kotaro to school to take him something he forgot, but they end up getting into a fight. Puniru turns into an idol t...Read more

Neither Friend nor Slime
10.0

October 13, 2024 • 24m

Kotaro asks Puniru to turn into a first grader and act lost so he can look good in front of Kirara-senpai, but little does he know...Read more

Kawaii Puniru is a Slime
10.0

October 20, 2024 • 24m

Kotaro’s favorite plushie as a child was the adorable Kyuthi-chan, which had a profound (jealous) effect on Puniru. Now he wants t...Read more

Alice in Kyuthi Land
10.0

October 27, 2024 • 24m

Alice, granddaughter to the president of the toy company that made Kyuthi-chan, challenges Puniru to see whether she or a characte...Read more

GO! GO! Fabulous Cheer Routine!
10.0

November 3, 2024 • 24m

In an attempt to please Alice, Hodai dons a Runrune costume. Meanwhile, Nanpa, Puniru, and Hone-chan fight over Robo Runrune. Then...Read more

The Runrune-tastic Grand Prix, Now with Puniru!
10.0

November 10, 2024 • 24m

Puniru gets moldy and down in the dumps when Runrune starts ignoring her. Later, she’s determined to get Runrune and Alice to be f...Read more

Sweet Bitter Summer
10.0

November 17, 2024 • 24m

Kotaro and the boys go to the beach for a day of fun while Puniru and Kirara-senpai are at the school pool. Later, Kotaro asks Pun...Read more

Gather 'Round for the School Festival!
10.0

November 24, 2024 • 24m

It’s time for the school festival, but Puniru and Alice get into a fight over Kotaro. Alice tries to win him over with an incredib...Read more

Let's Start a Band, Punks!
10.0

December 1, 2024 • 24m

Kotaro wants to be cool and decides to try his luck with dragons and a rock band. Puniru then lets the cat out of the bag about Ko...Read more

Merry Punirumas!
10.0

December 8, 2024 • 24m

Ever since being teased as kid for liking cute things, Kotaro has never enjoyed Christmas. This year his parents are going on a tr...Read more

Scoop Up a Spoonful of Christmas
10.0

December 15, 2024 • 24m

Puniru says she’ll spend the holiday with whoever brings her the cutest Christmas cake, but the offerings she gets are... interest...Read more

A Lovely, Puniful Destination
10.0

December 22, 2024 • 24m

Out of the blue, Kotaro wins tickets to a ski resort—specifically the Runrune Resort run by Alice. When they get there, Puniru is ...Read more

Puniru Returns
0.0

July 6, 2025 • 24m

While hoping for Puniru's return, a lonely Kotaro sees the fruits of her cuteness training from afar. One day, he receives an unexpected package.

Going on a Journey with My Childhood Friend Slime in Another World. And Valentine's, Too!
0.0

July 13, 2025 • 24m

Finding himself transported to a fantasy world, Kotaro learns he must rescue Princess Kyuthi, who has been imprisoned in the Demon Lord's castle.

Rune Rune Dance
0.0

July 20, 2025 • 24m

After Runru breaks down, Puniru decides to inject it with some slime-based medicine that has an unexpected side effect: awakening its sense of self.

A Being More Perfect than a Toy
0.0

July 27, 2025 • 24m

Mado succeeds in creating an artificial slime lifeform and names her Gelee. Wanting to become more human, Gelee begins searching for someone to love.

Puniru Powers Up?! See It for Yourself!
0.0

August 3, 2025 • 24m

Kotaro has big plans for the summer, but could he be his own worst enemy? Meanwhile, Puniru seeks to power up.

A Human Happy Ending
0.0

August 10, 2025 • 24m

Gelee becomes the center of attention among the school's boys, including Kotaro, much to Puniru's chagrin.

A Midsummer's Runrune Resort
0.0

August 17, 2025 • 24m

Alice invites Kotaro to stay at Runrune Resort, but all Kotaro can think about is Gelee and her advances.

Trick or Kawaii!
0.0

August 24, 2025 • 24m

Gelee joins Kotaro's class as a student, to her chagrin. Meanwhile, Puniru plans a big surprise for Halloween.

Art Is All About "Kawaii"!
0.0

August 31, 2025 • 24m

Hodai hatches a scheme to discredit Kotaro in Alice's eyes by having him face Nanpa in an artistic face-off.

Friendly Enough to Always Argue
0.0

September 7, 2025 • 24m

Kotaro gets into a big fight with Puniru, who runs away to Mami's apartment and meets the Kirara family.

The Human Condition
0.0

September 14, 2025 • 24m

Kotaro holds a study group with friends, but his careless remark to Gelee ends up having dire consequences.

That's What the World Calls Love
0.0

September 21, 2025 • 24m

Puniru turns into a perfect human girl, but Kotaro doesn't seem as happy to hear the news as everyone else.