This video, titled "An Akagi helicopter takes off from the Shizuoka Heliport｜Kaman K-MAX JA6236" (静岡ヘリポートを離陸するアカギヘリコプター カマン　Ｋ-ＭＡＸ　JA6236), was released by "Blue san" (ブルーさん).
This stylish helicopter is the Kaman K-MAX, a cross-rotor helicopter developed by Kaman Corporation.

This helicopter does not have a tail rotor, but instead flies with two rotors on each side (intermeshing rotors).
With this system, all the power of the engine is transmitted to the main rotors.
The movement of the left and right rotors, which rotate alternately to avoid collision, is very interesting to watch.
Watch the video to see this unique helicopter taking off!