Seeing Yuno mentioned in a different thread brought back an idea I had for this picture a while back: what if Yuno, an obsessed tsundere that loves you so much she would let you do anything you want with her, was also unbearably ticklish to the point she genuinely can't take it.
It just fucks her up. Screaming and begging within minutes, giggling uncontrollably even if you're doing something as simple as slowly dragging a finger up and down her sole. And you love to do more than that, of course. When you bring out the brushes she borderline has a seizure. After a couple of hours of screwing around with her underarms, she's pretty much an empty husk, laughing weakly, her head in a different planet.
But still, she lets you do it, because... she loves you, right? And you love her, you tell her all the time. You're showering her with attention and praise for being the perfect girlfriend ,all while you're making her beg for her mommy to come save her from the mean fingers raking over her ribs, and that part of it feels so good. You're her precious soulmate, there's no way you could be taking advantage of her. Furthermore, as you're tickling the shit out of her, you periodically fuck her brains out too, and she gets that high of having all of your attention and desire just for her, just like she always wanted.
And yet, her predicament makes her feel like she's going to lose her mind. She keeps swearing that she loves you and that she'll be a good girlfriend, so please don't do that to her anymore, but you're relentless, and she would never say no to you and risk losing you, but every second of the dreaded tickling is so intense and terrible...
A part of me thinks that's almost the perfect tickle slave. Willing, submissive and devoted, but also a perfect sponge for sadism, endlessly suffering for you out of her own will, content with the headpat you give her at the end of a session, when she's covered in sweat and tears, and you tell her you love her and she's a good girl for letting you have your way with her ticklish body.