Ep. 7: Hiroshi Solves The Piano Puzzle With Russian Music
Aired on November 21, 2016

The group attempts to solve The Piano Puzzle, but after three hours, Hiroshi succeeds by playing Russian folk music on the instrument. This action unlocks a Tetris-like game that proves impossible for anyone to complete.
Episodes
- Ep. 3 · Mika attempts to confess to Takuro despite constant interruptions from Hiroshi and Oni groups
- Ep. 4 · Aooni's Classy Day
- Ep. 5 · Hiroshi and friends encounter a magical closet while fleeing The Oni
- Ep. 6 · Mika threatens the boys while showering, but The Oni intervenes before they can peek.
- Ep. 7 · Hiroshi Solves The Piano Puzzle With Russian Music
- Ep. 8 · Hiroshi and friends trapped in jail cell while Oni gets head stuck in bars
- Ep. 9 · Blockman creates a mascot after seeing a local competition
- Ep. 10 · Hiroshi, Takuro, and Takeshi use Mika's speed button but crash into a wall after losing control.
- Ep. 11 · Hiroshi and friends escape The Oni via a lethal Rube Goldberg trap