Working on Toko's hypersensitivity

When Komaru plays with Toko and shows physical affection, she notices her friend always flinches and tenses up even when it's something as innofensive as a hug, this hypersenseitivity is caused by her extremely limited social experiences, and some of those having been negative. Komaru decided to help Toko by getting her accostumed to be touched, the girl hesitantly agreed with whatever crazy plan Komaru had. The first step is for her to undress, show off her body without letting her low self-esteem get in the way, the next one is getting tied up so that way she can be touched without being able to react in any way until she gets accostumed to it.

As Komaru touches Toko, it seems to be working out until she accidentally slides her hand on her armpit, which causes Toko to yell and squirm, catching Komaru off-guard. "Woah, okay, uhh..." Komaru was about to apologize and avoid her friend's armpit until a devilish thought crosses her mind "... Are you ticklish, Toko?", her question makes Toko freeze in place, she lightly scratches her armpit with one finger and this already causes Toko to let a loud laugh and yell "NOOOO, STOP! PLEASE!", but Komaru giggles in amusement and doubles down on it instead. "Oh how silly of me, of course you're ticklish! Even I would be dying if someone was tickling my armpits like this right now. How about here? Here? Or here?" Komaru gets very excited as she starts to tickle Toko relentlessly, the poor girl's upperbody becomes Komaru's little toy as she tests out what makes her friend laugh the hardest, even going as far as licking her armpit and belly.

"STOOOOOP, I DON'T WANT TO DO THIS ANYMOOORE!" Toko screams as she cackles and gasps, being physically weaker and very ticklish pretty much everywhere, she can't do anything besides staying there and taking Komaru's devastating tickles. "You know, Toko, despite how you view yourself, I do find you to be pretty hot, especially when you're laughing and squirming like this..." Komaru says as she licks her lips, her words would make Toko flustered if she wasn't already laughing so hard. After a while, Komaru lets her rest for a bit, "Good girl, you did very well." she whispers as she kisses her cheek, Toko then responds "Fuck off, I'm not doing this ever again..." but then Komaru tickles her armpit again and asks "Really? You sure about that? You must not be thinking clearly..." and Toko desperately blurts out "Okay! Okay! I take that back, stop!" as she laughed, then a satisfied Komaru hugs her.