So for full disclosure, I posted a reaction to Unforgettable Day before but it was the Chinese Show version. Not only did that video get blocked by the Chinese Show, many, many subscribers told me I should have listened to the Gakku version.
So... This is a first time reaction of the Gakku version of the song, but I have heard the composition before (in case people accuse me of not being truthful).
Needless to say, you were all correct. This version is amazing. I liked the older version but this is really so much more. Thank you.
Original link: https://www.youtube.com/results?search_query=dimash+unforgettable+day+gakku