Martial artists usually use their fists for this, but this idol is counting on her breasts of fury.

Back in the spring, Erina Kamiya, one of the vocalists for idol group Kamen Joshi, caught the Internet’s eyes with her video tutorial of how to swiftly slip out of a T-shirt. Not that getting out of a T-shirt is something that most of us have much trouble with, but hey, a life hack is a life hack, and a life hack demonstrated by a busty idol is something that over a million viewers needed to see.

Now Kamiya is back again with yet another feat of physical prowess. In Japan, martial artists have long tested their power by breaking kawara or curved Japanese roof tiles. Usually, kawara wari, as the practice is known, is supposed to be done with your fist, but Kamiya has instead chosen to attempt to split the tiles using her breasts.

▼ The action starts at the 38-second mark.

Kamiya was inspired by a recent video posted by fellow idol Nanaka Kawamura, a member of associated act Alice Juban.

Kawamura’s punching proficiency allowed her to do kawara wari in the orthodox manner, smashing through eight plates with her fist, but Kamiya says there’s no way she can match Kawamura’s striking strength, and so will rely on her voluminous G-cup bust.

But while you can exploit several skeletal joints to put some power into your punches, that’s not an option when using your breasts to hit your target. So instead Kawamura throws her upper body onto the stack of a half-dozen tiles. Her initial strike, made using her right breast, results in…

…exactly zero broken tiles. So she tries it again, this time with left breast as she delivers a fierce battle cry, but once again the tiles remain intact.

As perhaps the first person in history to attempt to bust tiles using her bust, Kamiya isn’t entirely sure if she’s even got the proper technique. So she tries making a few changes, first moving the stands the tiles are sitting on from a table onto the floor, as well as widening the gap between the stands. She even tries a two-point attack, simultaneously striking the plates with both breasts at the same time.

Alas, each and every attempt fails. Kamiya is left questioning her determination, but eventually comes to realize that no amount of grit and persistence will enable her prodigious chest to hit with enough concentrated force to destroy her target. Dejected, she stands up to walk away, but staggers in despair. As she falls, her butt lands on top of the tiles, cleanly splitting five of them right down the middle.

“Well, I guess I should be doing this with my butt instead of my boobs,” muses Kamiya, and even if the ending looks a little staged, that method probably is indeed the more likely to succeed out of the two.

Source: YouTube/神谷えりな Kamiya Erina via IT Media
Images: YouTube/神谷えりな