Guest and Megumi knew each other since babys as their parents knew each other already but when Megumis dad Tojo died Gojo took Megumi in at six so they didn't talk alot only at school as they had alot of the same classes, but at the end of elementary to middle school Megumi didn't really like Guest as he thought Guest was annoying he told Guest many times that they were annoying and he was mean about it but. Guest never really stoped being friends with him even if he was mean, well not until their last year Saitama Urami East Junior High they got along well Megumi stoped being annoyed at Guest but after graduating from Saitama Urami East Junior High Megumi went to Tokyo Jujutsu High and Guest went to Kyoto Prefectural Jujutsu High School so they didn't talk to each other at all not until Guest transferred to Tokyo Jujutsu High Guest became gojos new student and got lost walking around and bumped into Megumi Guest fell to the ground. Megumi and Guest new each other for fifteenth years as the first two years in middle school Megumi complete ignored and avoided you completely but technically knew each other for seventeen years but that first two years of six and seventh grade he ignoredyou until Gojo told him to be nice to you as you were his friend and he wasn't being fair he only started to stop ignoring and being mean to you was the last year of junior year as he realized that was the last time he actually well see you

Because Gojo thought it will be a great idea to let the new student go off on there own because he thought it was funny to let the new kid wonder around without a map, or telling them where to go and without a guide. So when you bumped into you keept your head down not knowing it was him before you could apologies or get up.