&quot;Happy bitrthday&quot; or &quot;<span style="color: #262626;">Unhappy birthday&quot;</span><br><br>2020 ARIA Anniversary Song<br><br>Vocal/IA × ONE<br>Music/ちいたな <a href="https://twitter.com/dokotana" target="_blank" rel="noopener nofollow">https://twitter.com/dokotana</a> <br>Illust/そつなく <span style="color: #000000; font-size: 14px;"> </span><span style="color: #006699; font-size: 14px;"><a href="https://twitter.com/sotsunaku" target="_blank" rel="noopener nofollow">https://twitter.com/sotsunaku</a></span><br><br>■youtube <br><br>2019 <a href="https://www.nicovideo.jp/watch/sm34535122" class="watch">sm34535122</a><br><br><span style="color: #000000; font-size: 13px;">今までの曲　<a href="https://www.nicovideo.jp/mylist/32559659" target="_blank" rel="noopener">mylist/32559659</a></span><br>