For the first time in 10 years, Amano returns to the city he lived in as a child. On his first day of school he runs into his childhood friend, Yukio Sawatari, when suddenly he (a male friend) turns female! As it happens, Yukio has a rare medical condition called "spontaneous isomerism metamorphosis", commonly known as "sudden sex change syndrome", causing him to... well, you can probably imagine what.

The female childhood friend ♂ is so cute it's frustrating!! A romantic comedy full of forbidden TSF love!

(Source: Kadokawa, translated and edited)

The story will combine the legend of a demon king with a hero who crosses over time and other things. The comedy will involve traveling between a Japanese living room and another world.

(Source: ANN)