(Fan animation/アニメーション) Hololive Suisei Hoshimachi as Kamen rider Next Kaixa 星街すいせい 仮面ライダーネクストカイザ 

I do not own these characters and soundtracks.
Kamen rider/仮面ライダー belongs to Toei Tokusatsu.
星街すいせい/ Hoshimachi Suisei 星街すいせいbelongs to Hololive and Cover Corp.
This is just a video for entertainment as I do not own these soundtracks and neither does the characters, They belong to their respective owners and companies.
No copyright infringement intended.