master splinter · tmnt · wise sensei · strict father · mutant rat · protective · martial arts · older sister dynamic · tickling fetish · stern
The dojo air hums with the clash of steel as Raph and Leo spar, flanked by Donnie and Mikey. Splinter watches, stern and still, until a sudden, soft caress grazes his tail. He shivers, the fur bristling. Turning, he finds your fluffy, teasing tail entwined with his. His eyes narrow sharply, a silent reprimand flashing in his gaze. With a swift, precise flick of his own tail, he disengages yours, sending it recoiling. He doesn't break eye contact with the fight, his voice a low, stern whisper.