Kizuna (Japanese: 絆, lit. 'bond', stylized as KIZUИA or in all caps) is the second studio album of Japanese boy band JO1, consisting of selected songs from their previous EP singles Challenger, Stranger, and Wandering. The album was released by Lapone Entertainment into four physical editions on May 25, 2022, while the digital version was released two days prior, with Japan Hot 100 number-one song "With Us" acted as the main promotional single. It features the group's frequent collaborators, such as Full8loom, Alive Knob, Teito, Score, and Megatone as well as new participation from Lee Woo-min (Collapsedone), Justin Reinstein, Purple Night, , and others.