SWEET STEADY, a Japanese female idol group under Asobi System, was formed in March 2024. The members are Ayu Okoda, Yui Otoi, Natsuka Kurita, Rise Shiokawa, Nagisa Shoji, Mayumi Shiraishi and Sakina Yamauchi. Known affectionately as "Suisute" by fans and "Suidei" for their fanbase, the group quickly made a mark in the idol scene. They kicked off their journey with the release of their first digital album "Start of a Signal" on March 1, 2024, and soon after, they debuted live at "KAWAII LAB. SESSION SWEET STEADY" in Ebisu The Garden Hall, Tokyo. Over the following months, they maintained an active release schedule, putting out several digital albums, including "Heart's Magic" (2024), "Just Kidding!" (2024), "Guidepost" (2024), "Call me, Tell me" (2024) and more. Their rapid succession of releases culminated in their first solo live performance in June 2024 at the EX THEATER ROPPONGI, which was centered around their initial album theme Start of a Signal. SWEET STEADY released their first single CD "Pajama Party! / Diamond Days" on December 18, 2024.