Sunnynostic

Sunnynostic is a subset of -nostic. It's a gender related to warm, fuzzy feelings of nostalgia, sunsets, sunflowers, warm sunny days on the beach, sweetness, summer, warmth, and happiness.

History and Flags
On 2021/8/10, Tumblr user mogai-sunflowers coined the term on Tumblr. The flag's description is A flag with nine equally-sized horizontal stripes. From top to bottom, the colors are medium grey-pink, rose red-pink, red-orange, golden, off-white, turquoise, blue, blue-purple, and medium purple.