[OP13-060] - Amatsuki Toki (Carrying On His Will: 3rd Anniversary Tournament Cards)

If this Character would be K.O.'d by my opponent's effect, can I use this Character's effect to trash this Character itself?

Yes, you can. In this case, this Character will be trashed without being K.O.'d, and any effects that activate when a Character is K.O.'d will not activate.