That was just... heartwrenching. At least if we can say there was a silver lining, it's that Cheza pulled off a truly amazing feat. Kinda reminds me of my Crystal Nuzlocke where a Lv23 Eevee took down Chuck's Poliwrath singlehandedly because I went in underleveled and lost half my team.
Yeah. I'm doing a nuzlocke run in Alpha Sapphire right now, and I did a buttload of grinding before challenging Flannery because I remembered what happened to Chiaki's team. (I didn't go in until my team was at least Lv. 30.)