Chie and Yosuke STILL defending Johnny from his Shadow, despite being shown and told what he really was like and what he feels. Simply because they can't leave someone to die alone, even at the risk of their own personal health.
Johnny, truthfully and politely asking if Yosuke is okay and being glad that Chie is alright as well after the battle with his Shadow.
Yosuke willing to try and have his Shadow focus on him rather than harm Johnny anymore.
Johnny not holding it against Yosuke for the thoughts his Shadow revealed, made even better when the thoughts revealed were that Yosuke only hung out with Johnny initially because he probably did not have any friends, and that Yosuke got a momentary kick out of seeing Johnny get taken down a peg in his memories.
Yosuke admitting all of Chie's faults, but also stating all her good points immediately after and calling out her Shadow's bullshit.
Chie wanting to start over with being friends with Johnny after her Shadow revealed that she wanted him, Yukiko, and even Yosuke to look up to her and make her feel special. Made even better when Johnny accepts, albeit he does make a snarky comment about her way of "starting over" via re-introducing themselves and shaking hands being cliche as all hell.
Chie reuniting with Yukiko. Them hugging it out and the relief Chie feels just melts your heart.