Wooooohooo!
Great!!!!! The next technique is only cool because of a red chakra wave that comes with it. Basically you will charge your sword with chakra and perform a crescent shaped slash at your target as you expell a wave of red chakra from the sword. The technique after this one requires you to know how to perform chidori, due to that I will only need you to tell me about the technique in general after reading it. Advantages to it, as well as drawbacks which comes with it. User of the technique would basically charge chidori (about which I am certain you heard and know) through a katana in a similar manner that Asuma charged his blade with chakra. Charging the mighty chidori within the sword would enable, now chirping sword, to easily cut through steel as well as ability to numb the target with whom the sword came in contact with.
(Suraisu Shinku no Nami) - Slicing Crimson Wave
Rank: B
Type: Offensive
Range: Mid
Chakra cost: 20
Damage points: 40
Description: The user does a simple cresent-shaped slash at the opponent, expelling a red chakra wave.
(Kusanagi no Tsurugi: Chidorigatana) - Grass Cutter Sword: One Thousand Birds Katana
Rank: B
Type: Supplementary
Range: Short
Chakra cost: 20
Damage points: 40
Description: The user flows Chidori current through a katana in manner similar to flying swallow technique. The Radiating and chirping blade can easily cut through steel. Furthermore, the body of the person cut by the sword goes numb, taking away their freedom of movement.

(Suraisu Shinku no Nami) - Slicing Crimson Wave
Rank: B
Type: Offensive
Range: Mid
Chakra cost: 20
Damage points: 40
Description: The user does a simple cresent-shaped slash at the opponent, expelling a red chakra wave.
(Kusanagi no Tsurugi: Chidorigatana) - Grass Cutter Sword: One Thousand Birds Katana
Rank: B
Type: Supplementary
Range: Short
Chakra cost: 20
Damage points: 40
Description: The user flows Chidori current through a katana in manner similar to flying swallow technique. The Radiating and chirping blade can easily cut through steel. Furthermore, the body of the person cut by the sword goes numb, taking away their freedom of movement.