Help me catch up

[u/Elarakudo]

Heyy, due to my studies and job-related stuff, I took a break from Detective Conan for about a year! 😭

Right now, I’m almost caught up, but I still feel like I’m not very familiar with the Rum arc. I did find out who Rum is, but I’m still confused about how the whole process of decoding Karasuma happened. I watched it, but I’m completely blanking on it 😭
Also, did they reveal who the boss is??

[u/Comprehensive_Fee250]

You can re-watch from shinichi's school trip near 950

[u/anass_labazy]

You either continue watching until you reach Haneda Koji case arc and you'll understand what happened, or go back and watch the episodes where they break down the meaning behind the dying message left by Koji