Noctova Smile

Noctova Smile (ナクトヴァの微笑み, Nakutova no hohoemi) it’s one of the 42 Tools to aid the World’s collapse described in the Book of Demise.

About
The tool is shaped like the left half of a mask and its function is unknown. It appeared in HL in a bath of blood and was quickly taken by the HLPD. The US government ordered the HLPD to deliver the tool to them, and both Veneno and Curious tried to steal it during the transportation out of the city, ending with Klaus making Curious destroy it during their fight.