The mp3 lists the genre as Dance & House; therefore, you may add "dance" "house" "electronic" into tags as well.
There is a space between まで and -coda-, so
Romanised title should be: Kyou ga Owaru Toki made -coda-
Since polysha's bandcamp page lists the singer as Takanashi Megumi (can be seen as here: https://masamunejp.bandcamp.com/album/papermoon & screenshot here: https://cdn.discordapp.com/attachments/655483404065833001/891653431092211743/unknown.png showing),
Romanized title should be: polysha feat. Takanashi Megumi
You may consider adding 小鳥遊めぐみ's personal circle, "桜仔猫*" and "Sakurakoneko*" into tags, as she also lists this song in her works section: http://megmiu.ciao.jp/main/works.html