>>76387353The reason Ina chose Meconopsis for the title is because it's a type of poppy flower genus that, while commonly comes in blue-violet, also flowers in pink, orange, yellow, and white. The flowers themselves are also hardy and take a lot to wither but only after they flower.
The whole song is an allegory for the struggles and bonds of Myth, corroborated by the fact that Riku drew inspiration from Myth Bad End.
