>>46220251>>46220522 hit on it but Koharu has always liked Pokémon (it's her who invited Gou to Pokémon Camp, after all, and you see her cheering with the other children in several scenes) but JN11 (Gengar) explains that she lost interest because everyone (classmates and I'm sure adults, too) kept impressing on her that she was going to be a carbon copy of her father, who even Professor Oak described as a genius. She didn't like the pressure of being compared to him when she didn't know if she wanted to be a Professor and all this pressure made her lose interest in Pokémon.She has a few scattered appearances before and after this, but JN20 (Orienteering) is significant because while she's disinterested in Pokémon and snarking at Gou throughout, at the end she sees how excited the other children are and she has a moment where she stares at Gou before she points out Farfetch'd to him, effectively helping him catch a Pokémon.
Her next appearance is JN29-31 (Pidove, Pikachu jealousy, Milotic). The Pikachu episode isn't focused on her but Pidove gives us not only a look at her past character (pre-meeting Gou, given her apparent age in the flashbacks) but it shows that despite what she may do on the surface, she's a caring person underneath (her jealousy over Yamper getting attention in the past doesn't stop her from going to look for him, and her annoyance with Yamper's jealousy in the present doesn't stop her from rushing out when Fearow attacks). Milotic continues to build this up, since she wants to help Nami despite still nominally disliking Pokémon (something Gou points out, and she denies it but it's clear she's not being fully honest with her feelings). The episode ends with her saying "Pokémon sure are amazing...", showing that there are some real cracks in her cold ways that made her disinterested before.
