Tsubomi Daiseki is a Japanese female idol unit, formed in 2009 by about 30 students from the NSC Female Talent Course affiliated with the Yoshimoto Kogyo Group, and officially launched in 2010 as a group of 24 members, 13 of whom remained after auditions and 11 of whom were new members. In 2014, the group changed from its previous activities, which were more variety oriented, and began idolizing in earnest. 2015 saw the group's major debut with the mini-album "1000 Days Ago I Love You!" In December 2016, they released their first single, "Arigatou wa Jutte no Kokoro datte". 2017 saw the release of their second single "Skakkatte". s second single "Skatte Samaraba☆" and 2018's third single "Dreamer" before releasing their first album "9" in February 2019. After that, they continued to release singles "Running Out Hope" and "Laugh DNA" in 2019, "Love Lunch" and "Gyakusyu no YEAH!" in 2020, followed by their 2nd album "Strongest Tsubomi DX" in 2021, an EP "GOCHAMAZE" in 2022, another EP in 2023, and another EP " In April 2025, they announced their last album "DENSETSU ~Mochi hare! Be happy! ～was released in April.