Kuroko: Not ticklish at all. Everyone thinks he’s lying, but when they try to tickle him he stares at them with a blank expression until they stop.
Murasakabara: When asked if he’s ticklish, he shrugs and says “not sure”. But when someone tries to test if he is, they get a hand to the forehead, holding them back at arms-length. Eventually they are forced to admit defeat (although most decide to think that he is ticklish, since he seems to be hiding something)
Aomine: Mildly ticklish, but not in the uncontrollable-giggly way, more in the shriek-and-jump-the-hell-away sort of way, especially when poked in the ribs. (Hence why Kuroko’s side-jabs work so well on him.)
Kise: Not ticklish, but openly wishes he was because he thinks it’s a cute and endearing trait. This remark is usually met with death glares from his teammates, current and former, who are actually ticklish.
Midorima: Ticklish as fuck. Everywhere is a tickle spot, which is why he tries to avoid physical contact as much as he can. It’s is darkest secret. (Lord help him when Takao finds out)
Akashi: Claims to only be ticklish in one spot (it’s the bottom of his feet, and the only person who knows this was his mother) Both his current and former teammates have never been brave enough to try and find out where it is for themselves.
Kagami: Very ticklish, but denies it at all costs, usually complete with a red face and stammered remarks. (Another victim of the Kuroko side-jab, and just as effective as it is with Aomine)