A fine collaboration between Bump of Chicken and Sangatsu no Lion’s story. The art was tremendously good, i couldn’t expect any less from the author’s style and how accurately it always describes the feels of it. The sadness within Rei’s heart and how the three sisters’ house was a safe place for him to be and finally rest at ease were very well portrayed during the animation, being complemented by the sound’s intensity and the beautiful lyrics. The song’s meaning, vocals and even the own name, “Fighter” summed up almost perfectly what Rei’s personality is and what he has gone through. A great addition to theanime as an opening.

I hope we see more of this duo in the next seasons!