A pastel pop design that sends your heart aflutter. The fluffy fur is just so cute!
— Website description[1]
Happy Synthesizer (ハッピーシンセサイザ Happī Shinsesaiza?) is an Outfit for GUMI.
Description[]
The Outfit's attire consists of a fluffy, white vest with a pink ribbon tied at the center, a light-turquoise top with a black collar and white polka-dots, long, black gloves, a lightest green skirt with black laces on the hem, black and gray, striped stockings, and black boots. Additionally, GUMI wears black headphones with pink, fluffy earpads and an attached mic on the right pad.
Game appearances[]
The Outfit first appears in Hatsune Miku: Project Mirai 2 where it can be unlocked for free by clearing "Happy Synthesizer" 10 times on any difficulty. In Hatsune Miku: Project Mirai DX, the clear count is cut down to five, but the Outfit remains a free unlock.