Training Gin

This quest starts when you defeat a Wildcat via lust attacks. To find a Wildcat, take a key from Cassie's safehouse, and unlock the gates to the Forest Park; they can attack you as a random encounter. Note that male partners must be enabled.

Meeting Gin
The first Wildcat whom you defeat by lust would freak out, and call that "unfair", because he can't defend against such attacks.

Lust Doll would offer to train him, starting the quest and making that wildcat (who introduces himself as Gin) available for interactions. He would spawn on the Forest Park's entrance.

Basic training
At first, only three options are available: use your boobs, butt or feet, which leading to the different scenes. Gin can't be trained more than once per day, so some rest is required before training can be continued.

After repeating the training enough times (at least five times), the option to go further would unlock. However, Gin would freak out at the last moment and run away.

The next day, he can be encountered on the same spot as usually, hiding in the bushes, and you can try to push a bit further again, but his usual shyness would ruin everything at the last moment yet again.

Advanced training
Afterwards, the usual training sessions can be resumed. After a couple of more session, an option to talk to Gin would appear; he would voice his doubts whether these "session" actually help him in any way, or just make the problem worse, because he becomes more and more vulnerable with each one. At that point, Lust Doll would reveal what this is exactly the point: Gin would grow so attached to them, no one else would make him hard ever again, thus making him resistant towards their seducing attempts, which technically still fulfils the agreement. Gin would react negatively, and insist what he "would resist", only to realise what he's barely able. Lust Doll would give him one last chance to consider whether he wants to continue the training: he can run away now, but if he returns, he must stay and finish his training. Gin would run away.

The next day, he would again try to hide in the bushes. When spotted, he would reveal what he's unable to even masturbate by himself: an addiction to Lust Doll is so strong, nothing else can make him cum now. He would try to have sex with them, but nothing would come out of this, as usually. After that, he would reluctantly agree to continue his sessions, now even more lewd than before.

Extensive training
After doing several more sessions, the option to go further appears. When picked, Lust Doll decides to check on Gin's progress and test his skills; now, it's his turn to make you cum. The outcome depends on the player's initial arousal: while Gin slowly arouses them, he accumulates lust as well. Possible results are:
 * Gin cums before Lust Doll does. It happens if the player comes with very low or zero lust, as Gin can't hold for long. This results in additional scene where he gets punished via orgasm denial, after which he is allowed to go a step further.
 * If Lust Doll cums after Gin penetrates them, Gin cums immediately after. The player can tease Gin for a bit, or confirm his success, with a warning that he did almost fail, and his endurance still has a lot to desire for.
 * If Lust Doll cums before Gin penetrates them, it counts as success, with no strings attached; he only gets warned that next time, the training would intensify further.
 * If Lust Doll cums immediately (due to already having maxed out lust), the training almost gets cancelled, but Gin can't resist pocking the player's hypocrisy again and again, and ultimately gets "punished" by Lust Doll returning favour, starting this training for real; but, as it starts with zero lust, it guarantees Gin failing to satisfy Lust Doll again, resulting in the first outcome (see above).

Once this test gets passed (in one way or another), the next options replaces his usual training:
 * Him playing a maid (requires complete Maid set; the set gets lost afterwards, staying with Gin permanently, and must be reobtained)
 * Him playing a prisoner

Giving Gin maid outfit is mandatory for completing his route, while prisoner scene is optional.

Conflict with Cassie
Occasionally, Gin leaves his usual spot and goes to the lakeshore, to... relief himself. If that happens, he wouldn't return until spotted by the player; they have an option to approach him or keep watching, but regardless of choice, Gin wouldn't be in the mood to train today. This event may overlap with Cassie going fishing (another random event), resulting in different scene, where she mistakes him for flasher, and attacks him; the player may help her catch Gin, or let her hunt by herself (unsuccessfully); this event is necessary for story progression. The chance for both happening simultaneously may be annoyingly low sometimes, but there's a way to make it easier:
 * Keep checking on Gin. If he goes to the lake, don't visit him yet; he would stay this way until needed.
 * Keep going outside of Abandoned Town and back, then checking whether Cassie is at home. If she isn't, save and go to the lake; if she's there, then scene would trigger, otherwise, reload and continue the process.

After Gin obtains his maid outfit, trigger the same scene again; this time, Cassie wouldn't recognise Gin, and would try to warn him about some "crazy flasher", with him barely hiding the fact that he knows what she's talking about. This would make Lust Doll realise what's the whole mess is about, and open an option to discuss this topic with Cassie.

After talking with both Gin and Cassie about it, it becomes possible to ask Cassie to go and talk it over with Gin. The text is marked with red, as it's a point of no return: regardless of what's said during the quest, Gin would leave afterwards. As the story currently ends here, it's unknown whether Gin would return, or not.