The slime created by the boy Kotarou can transform into a super beautiful girl! Kotarou is constantly getting pushed around by Puniru's freewheeling antics. It's a joyful and exciting life every day!
Cast: Yu Sasahara, Shuichiro Umeda
TV-14HDCC
Season 1
24 episodes
1. I HATE YOU and I LOVE YOUPuniru follows Kotaro to school to take him something he forgot, but they end up getting into a fight. Puniru turns into an idol to get Kotaro to admit she’s cute. Kotaro tries to enlist Puniru’s help in winning the affections of his crush, Kirara-senpai.TV-14CC24minOct 6, 2024
2. Neither Friend nor SlimeKotaro 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 Kirara’s maternal instincts go into overdrive around children. Puniru later plays a trick using this knowledge.TV-14CC24minOct 13, 2024
3. Kawaii Puniru is a SlimeKotaro’s favorite plushie as a child was the adorable Kyuthi-chan, which had a profound (jealous) effect on Puniru. Now he wants to go to the Kyuthi Café, where he gets Puniru to pretend to be his girlfriend so he can order a dish meant for couples.TV-14CC24minOct 20, 2024
4. Alice in Kyuthi LandAlice, granddaughter to the president of the toy company that made Kyuthi-chan, challenges Puniru to see whether she or a character Alice created is more adorable—and you could say the competition gets blown into gigantic proportions!TV-14CC24minOct 27, 2024
5. GO! GO! Fabulous Cheer Routine!In an attempt to please Alice, Hodai dons a Runrune costume. Meanwhile, Nanpa, Puniru, and Hone-chan fight over Robo Runrune. Then, to put some pep back in the exhausted Kirara-senpai’s step, Puniru and Runrune become cheerleaders.TV-14CC24minNov 3, 2024
6. The Runrune-tastic Grand Prix, Now with Puniru!Puniru gets moldy and down in the dumps when Runrune starts ignoring her. Later, she’s determined to get Runrune and Alice to be friends again. Next, AI Runrune hits the scene, and Alice and Puniru face off to see which Runrune is better.TV-14CC24minNov 10, 2024
7. Sweet Bitter SummerKotaro 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 Puniru to help him cool off with a special transformation, the gang hits a café, and then it’s time to tackle summer homework.TV-14CC24minNov 17, 2024
8. Gather 'Round for the School Festival!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 incredible offer, and Puniru tries to throw the match so he can pursue his dreams.TV-14CC24minNov 24, 2024
9. Let's Start a Band, Punks!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 Kotaro’s feelings for Kirara, which forces him to make a move. Can he get Puniru to help him out?TV-14CC24minDec 1, 2024
10. Merry Punirumas!Ever since being teased as kid for liking cute things, Kotaro has never enjoyed Christmas. This year his parents are going on a trip for the holiday, so in order to avoid being stuck home alone with Puniru, he tries to throw a Christmas party.TV-14CC24minDec 8, 2024
11. Scoop Up a Spoonful of ChristmasPuniru says she’ll spend the holiday with whoever brings her the cutest Christmas cake, but the offerings she gets are... interesting. When a certain someone loses their patience, she may yet get a Christmas to remember.TV-14CC24minDec 15, 2024
12. A Lovely, Puniful DestinationOut of the blue, Kotaro wins tickets to a ski resort—specifically the Runrune Resort run by Alice. When they get there, Puniru is determined to make an impression, and her desire to be cuter than ever may just spur even greater adventure.TV-14CC24minDec 22, 2024
13. Puniru ReturnsWhile hoping for Puniru's return, a lonely Kotaro sees the fruits of her cuteness training from afar. One day, he receives an unexpected package.TV-14CC24minJul 6, 2025
14. Going on a Journey with My Childhood Friend Slime in Another World. And Valentine's, Too!Finding himself transported to a fantasy world, Kotaro learns he must rescue Princess Kyuthi, who has been imprisoned in the Demon Lord's castle.TV-14CC24minJul 13, 2025
15. Rune Rune DanceAfter Runru breaks down, Puniru decides to inject it with some slime-based medicine that has an unexpected side effect: awakening its sense of self.TV-14CC24minJul 20, 2025
16. A Being More Perfect than a ToyMado succeeds in creating an artificial slime lifeform and names her Gelee. Wanting to become more human, Gelee begins searching for someone to love.TV-14CC24minJul 27, 2025
17. Puniru Powers Up?! See It for Yourself!Kotaro has big plans for the summer, but could he be his own worst enemy? Meanwhile, Puniru seeks to power up.TV-14CC24minAug 3, 2025
18. A Human Happy EndingGelee becomes the center of attention among the school's boys, including Kotaro, much to Puniru's chagrin.TV-14CC24minAug 10, 2025
19. A Midsummer's Runrune ResortAlice invites Kotaro to stay at Runrune Resort, but all Kotaro can think about is Gelee and her advances.TV-14CC24minAug 17, 2025
20. Trick or Kawaii!Gelee joins Kotaro's class as a student, to her chagrin. Meanwhile, Puniru plans a big surprise for Halloween.TV-14CC24minAug 24, 2025
21. Art Is All About "Kawaii"!Hodai hatches a scheme to discredit Kotaro in Alice's eyes by having him face Nanpa in an artistic face-off.TV-14CC24minAug 31, 2025
22. Friendly Enough to Always ArgueKotaro gets into a big fight with Puniru, who runs away to Mami's apartment and meets the Kirara family.TV-14CC24minSep 7, 2025
23. The Human ConditionKotaro holds a study group with friends, but his careless remark to Gelee ends up having dire consequences.TV-14CC24minSep 14, 2025
24. That's What the World Calls LovePuniru turns into a perfect human girl, but Kotaro doesn't seem as happy to hear the news as everyone else.TV-14CC24minSep 21, 2025
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★ 7.7/1020241 season24 episodesReturning Series
The slime created by the boy Kotarou can transform into a super beautiful girl! Kotarou is constantly getting pushed around by Puniru's freewheeling antics. It's a joyful and exciting life every day!
Creators and cast
- Created by
- Mirei Tsumura, Suguru Saito, Reiko Sasaki, Yuukou Itou
- Studio
- TOHO animation STUDIO, TOHO, TV Tokyo
Maturity rating
TV-14Check the rating before watching with younger viewers.
Audio languages
Japanese
