High Five ∞ Adventure

is a song by Hello, Happy World!

It is the title track for their 4th single, with Fuwa Fuwa☆Yumeiro Sandwich as the coupling track. It was released on February 20, 2019. The Blu-ray edition includes the first to ninth episodes of the mini-anime BanG Dream! Girls Band Party!☆PICO.

It is the gift song for the event Happy Adventure! ~Treasure Island Smiles~. It was also one of the challenge songs for the event Hagumi and the Happy Dinosaur.

It was written by Oda Asuka, and arranged and composed by Kasai Yuta.

Video
Single Preview = Short CM =

Chart Performance

 * On February 19, 2019, High Five ∞ Adventure ranked 4th in the daily singles ranking in Oricon.
 * The single achieved 9th place in the weekly ranking.
 * It stayed in the weekly charts for 6 weeks.

Live Performances

 * February 22, 2019: Genesis
 * July 14, 2019: Heaven and Earth Day 2