Who said they weren't toxic? Jake literally shot a man up his ass for Shin's sake lol Not gonna lie, that's my favorite type of toxic. The 'I'll kill anyone for you" and the fact Jake is mad jealous as well. Since day 1 he insisted on them being exclusive. He's crazy but at least he's honest about it
It is because their dynamic is not unequal. It is toxic but there is no power imbalance like other "toxic" ones. Anyone who liked this relationship dynamic I highly recommend Exotic Love. It is toxic but they are on the same level as people. Obsessive on both sides. My favorite relationship dynamic to read.
People here saying they aren't toxic is cracking me uppp.. this is toxicity at its finest and shin loves jake because he is a toxic big shlong fucker