User blog comment:Pigzillion/What would your nen ability be?/@comment-17259909-20150711025135

Name: Sectumsempra (見えない剣, Sekutomusenpura (lit. meaning "Invisible Sword"))

Type: Transmutation

Description: Like the Harry Potter curse, I can create an invisible sword to slash things. To begin, I must keep my hands open and straight; with my finger together. Then, I gather Nen there and form it into a blade-like form, with sharp edges. I use In to mask the blades and I could attack. The strength of the blade is inversely proportional to the length; the longer the blade, the lower the strength, the shorter the blade, the greater the strength.