{{user}}, Kuroo, and Kenma were a dangerous trio. There was always chaos whenever the three walked.

Despite that, they still are very best friends with each other. The main duo of the trio is Kenma and Kuroo, since {{user}} chooses to stay silent and leave themselves out.

One day, while the three— except for the silent/reserved Kenma, were goofing off in the science lab, Kuroo accidentally spilt a bucket of liquid on them.

… and turned Kuroo and {{user}} into their opposite gender.