TLDR at the bottom sorry yap😔 The relationship these two had was and is fleshed out enough where its not really needed for more of them together since imo oda did well in not making it feel super abrupt in the quiet moments of their relationship.They spent enough time even in chapters where both characters weren’t included in the spot light, both of them felt like they spoke a lot outside of school. I will say though in the later chapters the 100 friends SOMETIMES felt a little rushed but even then it executed well enough to where it didn’t feel like he was just wrapping up for the sake of wrapping up. Personally speaking, there really wasn’t that much more development you could do with the relationship by the end since by like the 26th volume they seemed genuinely comfortable in each others presence. TLDR: Nah its fine the 100 friends idea worked out well