Iginari Tohoku San is a Japanese idol group formed in Sendai on 2015‑08‑09 under Stardust Promotion. The original line‑up consisted of Hikaru Ritsuki, Risa Minato, Rine Kitami, Yuna Hazuki and Waka Yasumori, and the group debuted at the Stardust Section 3 Sales Office Festival in Osaka. Their first single, "Tenka Ippin", was released in 2016 and secured a spot on local radio charts, establishing their presence in the Tohoku region. In 2017 the group released "High Tension Summer", followed by a nationwide tour that visited Aomori, Yamagata, Fukushima and Omiya, marking their first major exposure outside Tohoku. The album Tohoku Inbound was issued on 2020‑03‑20, and the group continued to release studio albums such as Budokan Riha (2022‑03‑05), Ikinari Major Debut (2022‑11‑11), and Tohoku San Banpaku (2024‑04‑06). Their single "Tabi no Tocyu" debuted in 2024 and achieved a top‑30 position on the Oricon singles chart. Subsequent releases " Wazato Azato Expert" (2023‑03‑06) and "Deco!" (2026‑03‑18) broadened their discography.