Continually Adapting (to Stay Alive)
Shisui writes words to his soulmate, the one who never writes back, as if he were writing in a diary. Itachi sees him, tongue trapped between his teeth, as he works on a winding message that takes up both arms. It is lucky for Shisui that he is ambidextrous, Itachi thinks. It must not be so lucky for his soulmate though. Maybe it annoys them. They never reply to anything, but Shisui is stubborn.
Itachi’s soulmate always replies to him. Itachi draws birds with painstaking carefulness on his pale limbs. He gets grinning sharks in return, always. He wishes he could make them stay a little longer.