Demon Slayer: Why is Akaza attracted to fireworks?

The Upper-Rank Three holder, Akaza of the 12 Demon Moons in Demon Slayer: Kimetsu no Yaiba, is the most intriguing character in the show. He was introduced in the final moments of Mugen Train Arc, where he went against Kyojuro Rengoku.

As a demon, Akaza is always pictured as a ruthless and cunning creature who wreaks havoc upon human life and has no liking for anything in this world. And fans might not know that the demon was fond of fireworks in Demon Slayer. But why fireworks? Is there any particular reason for it?In his human days, Akaza was known by the name Hakuji. He became a disciple of Keizo, who took him as a caretaker for his daughter Koyuki. Hakuji (Akaza) developed feelings for her. Koyuki was suffering from a severe illness where she became bedridden. After Koyuki got married to Hakuji, the heir of the next door dojo challenged the latter for a duel where he lost miserably. Enraged by his loss, Hakuji poisoned both Koyuki and her father and died shortly after. Prior to Koyuki’s death, Hakuji promised her that they would see the fireworks together.