Japan / SEASON

Season 2

12 listed episodes · First aired July 6, 2025

EPISODE GUIDE

Episodes

Full guide ↗
E1Puniru Returns

After Puniru goes missing in the middle of training to become cuter, Kotaro receives an unexpected package.

E2Going on a Journey with My Childhood Friend Slime in Another World. And Valentine's, Too!

Kotaro is hit by a truck and finds himself in a world of swords and sorcery. Puniru learns about Valentine's.

E3RUNE RUNE DANCE

When Runru breaks down one day, Puniru and Kotaro must find a way to have her repaired, but at what cost?

E4A Being More Perfect than a Toy

After a science lab mishap, Dr. Mado unveils his latest creation: a super-intelligent robot made of slime!

E5Puniru 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.

E6A Human Happy Ending

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

E7A Midsummer's Runrune Resort

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

E8Trick or Kawaii!

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

E9Art is All About

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

E10Friendly Enough to Always Argue

E11The Human Condition

E12That's What the World Calls Love