This Armor is the second studio album recorded by Japanese singer-songwriter Chihiro Onitsuka, released in March 2002.

Like its predecessor, the title of the album was named by the artist, simply because she liked the sound of the phrase.

Cover art was taken by photographer Mika Ninagawa in Miyako-jima, Okinawa prefecture.

This Armor debuted and peaked at the number-three on the Japanese Oricon albums chart and remained the top-300 for 25 weeks, with estimated sales of over half a million copies.

The album was certified Platinum by the Recording Industry Association of Japan upon its release, for shipments of over 400,000 units.