A compilation album collecting big hit songs using the virtual singer Kasane Teto, who has been causing a sensation in the recent VOCALOID scene, releases. Kasane Teto was born in 2008 as an April Fool's joke singer character and gained popularity, and since the release in 2023 of the AI-technology-based voice software Synthesizer V AI Kasane Teto, many big hit songs that record tens of millions of views on video posting sites are produced. This work releases as the 2nd in the series of the compilation album 0401 - The Best Days of Kasane Teto, which released in 2012, after 13 years. A DJ event TETO SONIC 2026 by the creators who handled Kasane Teto's big hit songs is also announced for February 2026. The compilation album links with the project, so stay tuned.