Metalheads who grew up in a small house probably have this one thing in common — they've been yelled at by a sibling, parent, or grandparent to turn the music down. But heavy metal just isn't the same when played at a low volume, and truthfully, annoying the heck out of family members was all part of the fun anyway.

However, there are always anomalies, like when Japanese Twitter user Yuhei (@gypsyheart3) was a hardcore metalhead living under the same roof as his grandmother. One day when he was still in high school, he was in his room playing Slipknot on his guitar. After a while, his grandma (who was almost 100 years old, by the way) came in, but not for the reason he suspected.

Source: @gypsyheart3

Back when I was in high school, I was playing Slipknot on my guitar when my grandma (who was almost 100 years old at the time) came into my room. Not only was she dancing, she took the guitar out of my hands and started playing it like a shamisen. With the distortion, it actually sounded pretty good.

It wasn't that Yuhei's grandma simply walked into the room — no, she danced a traditional Bon Odori dance as she made her grand entrance, before taking the guitar from her grandson and stealing the show. Apparently, she knew how to play the shamisen, and was more or less able to play a song on the electric guitar.

Although this rockstar grandma has already passed away, Yuhei says that she was always "full of light, and danced whenever she heard music playing." She's probably proud to know that her love for music has been passed onto her beloved grandson, who now plays in the band Roley one Romance.

By - grape Japan editorial staff.