Curate, connect, and discover
Reading this and then reading the comments and reblogs feels like people are deliberately missing the point and continuing to describe the places where shuake's 'toxicity' is on display. Mainly, the interrogation room. Y'all, y'all, they're enemies in the interrogation room. Akechi has no choice but to kill Joker in the interrogation room, because Shido wants Joker dead. The interrogation room and all the lying and manipulating each other outside of it all happen because they are doomed. They're both pawns in a twisted game, manipulated against each other to suit their respective roles. We never technically see them in canon outside of some sort of doomed context (even in third sem) but they still manage to make each other better even when they're doomed. Akechi gives up his revenge plans for Joker, and Joker lets go of an 'ideal' reality with Akechi to respect Akechi's wishes. They both improve after meeting one another, it's definitely not toxic.
common misconception is that shuake is toxic: WRONG. they are doomed. it is not them that fucks up their relationship; in fact, they actually are shown to improve each other rather than detriment. its their circumstances that fuck them up so so bad. literal god pit them against each other. they love each other but the world does not love them