https://blog.wongcw.com/2019/09/02/%e5%88%9d%e9%9f%b3%e7%86%b1%e5%94%b1%e5%90%8d%e6%9b%b2%e3%80%8abutter-fly%e3%80%8b-%e7%b4%80%e5%bf%b5%e6%95%b8%e7%a2%bc%e5%af%b6%e8%b2%9d20%e9%80%b1%e5%b9%b4/
初音熱唱名曲《Butter-Fly》 紀念數碼寶貝20週年