I would recommend "Signal" by TK, it's also an anime opening of a really good anime called 91days. It's about a boy who lost his familiy to the mafia and wants to take revenge of the people that are responsible as an adult by joing the mafia and destroying them from the inside.
I really enjoyed your reaction and that you are open to any kind of music , I would love to see more TK , in my opinion the first take version of copy light is better than the studio version , I recommend you check out "Tsuru no Shikaeshi" its from TK'S most recent album "sainou" , peace
from tokyo ghoul anime unravel was the popular one but he had songs in that anime it's called katharsis and white silence. he did an opening song for 99 days anime called Signal, or if you want to check out his live songs you can check out the rock japan festival full live it's around 20+ mins with 4 songs in it.