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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 Puniru to help him cool off with a special transformation, the gang hits a café, and then it’s time to tackle summer homework.
Episodes
1I HATE YOU and I LOVE YOU 2Neither Friend nor Slime 3Kawaii Puniru is a Slime 4Alice in Kyuthi Land 5GO! GO! Fabulous Cheer Routine! 6The Runrune-tastic Grand Prix, Now with Puniru! 7Sweet Bitter Summer 8Gather 'Round for the School Festival! 9Let's Start a Band, Punks! 10Merry Punirumas! 11Scoop Up a Spoonful of Christmas 12A Lovely, Puniful Destination 13Puniru Returns 14Going on a Journey with My Childhood Friend Slime in Another World. And Valentine's, Too! 15Rune Rune Dance 16A Being More Perfect than a Toy 17Puniru Powers Up?! See It for Yourself! 18A Human Happy Ending 19A Midsummer's Runrune Resort 20Trick or Kawaii! 21Art Is All About "Kawaii"! 22Friendly Enough to Always Argue 23The Human Condition 24That's What the World Calls Love