WARNING: The following contains spoilers for Season 2 of Beastars, now streaming on Netflix.
In Season 2 of Beastars, Louis finds himself in a much different place than Season 1, no longer attending Cherryton High School as the top drama student. Instead, he's matured with a macabre air, now running with the Shishigumi clan: lions who are ruling the Black Market and in desperate need of leadership. This is where the deer comes in, but while it seems like he's infiltrating to change things, Louis does have a sinister plan.
Louis killed the clan's leader at the end of Beastars Season 1 to save Haru, the white rabbit he was in love with, but rather than maul him in return, the lions opted to make Louis their leader. They think it'll be good optics, inviting more carnivores and herbivores in if a herbivore actually began working with them. However, the general Ibuki makes sure Louis takes over and is respected, as he sees potential in the teen due to his sharp business acumen.
And so, Louis begins compromising himself, eating meat only to vomit it afterward as he desperately wants to fit in. He tries to give the impression he's converted into a carnivore but Ibuki knows the truth, coming off like a father-figure and secretly bringing the deer energy drinks and salad. He deduces that Louis has ulterior motives, but rather than get angry, Ibuki understands the mission.
Louis wants to change the lions' ways of thinking so they can stop the kidnapping, sex trafficking and selling of meat. In short, he intends to use them as leaders to effectively end the taboo nature of the market, but Louis soon gets lost in a personal war. His father -- who adopted him after he was slated to be devoured years ago -- is a corporate tycoon and corrupt businessman who wants to hand his empire down to Louis.
But Louis doesn't want the sins that come with it, leading to a fallout as his father thinks he's weak and unworthy. Thus, after choosing not to kill the old man, Louis' ego kicks in -- this is why he's been losing himself to the darkness, enabling the Shishigumi rather than trying to cure them.
As Season 2 of Beastars goes on, he shifts into wanting the gang to become even more powerful under his watch so he can lord it over his father. It goes from a vigilante job to one of narcissism, which finds Louis turning a blind eye to many crimes against his own kind.
Luckily, seeing as Legoshi was trying to save herbivores, the former classmates would run across each other, with the wolf reminding Louis he still had light within and that no matter what, he and Haru believed in the deer as a symbol for good. This left Louis pensive as he remembered how he wanted to be an agent of change -- not someone inheriting legacies stained with blood.
