It had been a while since a mysterious disease was discovered in modern times.
TS disease is a condition that only affects males and turns them into females in an instant once it manifests.
My best friend, with whom I had always been close, unfortunately, contracted this TS disease.
Changing from male to female, naturally, many things began to change.
But I couldn’t abandon him… no, her.
Even if her appearance changed and she became a woman, she was still my precious best friend.
That was something I believed would never change, no matter what happened.