This helmet increases Run Speed, HRV duration, and HRV Recharge Rate but decreases health and Head Protection.
This helmet could be won through the "RARE HELMET LOTTERY BOX", which was available post-Parity Patch, until it was removed in the holiday update on the 18th of December, 2015.
In-game Description Edit
Standard helmet. Movement speed and HRV recharge increased
Atago 9 is a reference to the 900 something shrines of Atago Gongen, who is a Japanese kami or god believed to be the local avatar of Buddhist bodhisattva Jizō, he is worshipped as a protector against fire.