To Brighten Her Day
The quest is unlocked after completing the Terrako, Empowered quest.
"In hopes of putting a smile on Princess Zelda's face, Terrako would like to take a bouquet featuring her favorite type of flower."
"Zelda loved the bouquet from Terrako! The two of them took a stroll together in the sunlight, with the princess holding the flowers close as Terrako played cheery melodies"