Saiki Kusuo no Ψ Nan: Season 2, Episode 21 - ProjectFreeTV

2 - 21: Chronicles of the Grandparents' Travels + Returning the Favor, Toritsuka's Ascetic Fasting + A Misunderstanding Between Opposite Sex Friends + A Big Scoop!

Kusuo's grandparents are visiting but get delayed on the way to the house. Luckily, or perhaps unluckily, his friends soon find them and try to help.