Lin Lin

Happy Massage
You can find Lin Lin in the "Happy Massage" massage salon, in the Slums. For a small price of 15, she would provide you her services, giving you the Relaxed status effect.

If you are aroused, you can request a "happy ending", which would result in some lewd fun. After that, you can tip her 20 ... or don't, which would annoy her (see below).

The revenge
See also: Devil's Drink

If denied her tip, or publicly humiliated on the arena (see the "Battle Arena" below), the next time you would pay for massage, Lin Lin would tie you and punish you, resulting in one of the two scenes; after that, the normal interaction would become available once more.

"It's my turn"
First option would result in her using your dick to please herself; if you have no dick, she would force you to grow one. Note that the dick would stay with you even after the scene.

Orgasm denial
The second option would result in her putting the vibrating dildo inside you, and would cover your face with the mask which would block everything but the breathing, and leave you that way for some time.

Battle arena
See also: Devil's Drink

Lin Lin is one of the random enemies you would see while on arena. She's very tough, but if you defeat her through physical damage, you would learn the Deep Breath technique.

If Lin Lin was defeated through lust damage, you can force her to publicly masturbate. This would result in "Happy Massage" becoming inaccessible for a day due to the clients overflow, and Lin Lin becoming angry at you, so the next time you visit her for some massage, it wouldn't end well for you...

Battle master
See also: Cassie's rescue

During the preparations for the Cassie's rescue, you can visit Lin Lin and ask her for help; she would agree... for a price. She may tell you about the Don's people's schedule (giving you more chance when inside), and may either provide support when dealing with guards outside (increasing your chance for success), or steal the keys for you, so you only need to actually climb on the wall.

A friend's advice
See also: Runaway master

When paying for the massage while having at least one Counterfeit Pass in your inventory, Lin Lin would comment on it being rather crappy, and tell you that you can pay the local tattoo master to increase its quality.