I'd normally never post something like this, but I happened to stumble upon a particular manga and I don't think I've seen it discussed in this sub. Apparently Japan has been getting creative as of late and made a manga that's legit about tickling and having a secret relationship as 'tickle friends.' Outside of random stuff on places like Deviant Art or Hentai sites, this manga appears to be one few forms of media with an actual central storyline revolving around the tickling kink and the life of someone with it. If you want to check it out yourself, I found a few sites that host the manga here (1, 2, 3).

This manga definitely is not for everyone and is 100% directed at a male audience, though it's certainly possible for someone who isn't an M Ler to enjoy this manga as well. The setting itself is very dumb, being in a world where everyone has their mind on sex, but what else is new with the kind of stuff Japan comes up with. There's a surprising wealth of kinks in here - tickling, obviously, but there's also other stuff like peeing oneself or the whole 'doing something in secret while others are nearby' type of thing.

At the end of the day, I was just so amused that something like this actually existed that I had to share it. Reading some of the comments of people actually being exposed to the tickling kink for the first time on some of these sites is also a good laugh. There's surprisingly a lot of "this better not awaken something in me" memes and such, so it's once again reassuring that stuff like tickling is still seen as one of the more tame kinks out in today's world.