ok so when Zoro and Luffy first meet Zoro’s 2 most important things to him were his swords and his own life like thats it nothing else matters to him thats all he needs. then he joins the crew and becomes the first mate. 

flash forward to Thriller Bark and u’ll instantly remember why that shits so poignant 

Zoro’s sacrificial actions are now basically declaring Luffy to be his literal everything he THROWs away his swords (Most Important Things #1) and offers up his own life (Most Important Thing #2) in exchange for Luffy’s survival. Literally nothing now is as important to him as Luffy and Luffy’s dream is, and thats the kind of relationship that fucks me right UP cuz we started from the bottom now we’re here