It's a super major song, but it's “The Only Flower in the World.”
When I first heard this song, I felt, “Oh, this was probably written by someone with knowledge of Buddhism,” but I was surprised to learn that the lyrics were written by Makihara Takayuki, who had a strong impression that he was the one who was arrested at the time.
However, when I looked it up closely, it seems that Makihara-san was convicted and interacted with a certain chief priest while under arrest, and came up with this song from a Buddhist story he heard there. Also, it seems that they were influenced by the children's story “The Little Prince.”
The Buddhist story that influenced it is the part of “Ikenaka Renge Daijowa: Blue Light Yellow Yellow Light Red Light White Light” in a theory of the Buddha theory Amida Sutra often practiced in the Jodo Shinshu sect.
This means “the lotus flower blooming in the pond (in the Pure Land of Paradise) is like a wheel, and the blue flower emits blue light, the yellow flower emits yellow light, the red flower emits red light, and the white flower emits white light, respectively.”
I think it is compatible with the part of the lyrics “There is only one flower in the world, each person has a different species, and you should work hard just to make that flower bloom.”
If we think about it, we won't be able to accept everything as we were born. I make an effort to be useful for someone or something, and I live my life being compared to others.
They were forced to glow white even though they were born as blue flowers, and even though they were born as red flowers, they had to glow yellow. As long as we live in this world, I think it's unavoidable.
However, the world called the Pure Land is a completely different world from the one we live in. It's a world where the whole person I was born is accepted, and I can truly shine in my own way.
What if the world where relationships in this world run out is a world where superiority and inferiority are divided by ability, etc., just like this world? I don't want to go to such a world, but a world of equality and peace.