This is a piano tiles game from KR Build, complete with beautiful henshin transformation.How to use:1. Tap all the black piano tiles, and not to be missed. save your KR Ex Aid.2. Perform henshin transformation with dx driver build.3. Collect the henshin points for KR Ex Aid to level upFeature :1. Soundtrack KR Build.2. Soundtrack KR Build - Ex Aid3. Soundtrack KR Build - Drive4. Soundtrack KR Build - GhostEnjoy every strand of his tone and good play