Who thinks that no matter how many generations pass, Naitik and Akshara were the best? They had the most natural chemistry in Yeh Rishta Kya Khelata Hai than in any other. The arrange marriage that turned into love, how they supported each other and faced everything together, how they fought but worked it out together, their adorable nok jhok, and how Naitik left his family for Akshara knowing she was unfairly blamed for Dadaji's death. I liked how they were always together, and how Naitik didn't marry anyone after Akshara died. That demonstrates his devotion to her.
Not even 'Kaira' or 'Abhira' could match their chemistry.