The process by which Togepi, a Fairy-type Pokmon, transforms into Togetic is achieved through high friendship. Specifically, once Togepi reaches a sufficient level of friendship with its Trainer, it becomes eligible for evolution. This is triggered upon gaining the next level.
This particular evolutionary method underscores the emphasis on the bond between Trainer and Pokmon. Successfully evolving Togepi serves as a tangible reward for attentive care and dedication. Historically, friendship-based evolutions have offered a unique and engaging mechanic within the Pokmon franchise.