It was a rumor on Internet for a while now, and it's been announced today: Kuu-chan launches her first brand of diet supplement, called "Killer Burner"!
In the presentation video, she explains that these supplements help losing weight consistently, especially for people who don't like to exercise that much and have trouble keeping a diet for a long time. She also said that the name comes from her song "Killer Monster" in her latest EP.

A new instagram account was launched, killer_burner along with a website to order the product online: https://killerburner.com/shopping/lp.php?p=burner