I feel like I should explain why I changed the tag's translation from "will believe" to "will listen to".
As I understand it, in the video, Yukari-chan tells a cool story about how she is going to become a gamer girl, own everyone and become extremely popular, while Akane-chan replies with "Yeah... Um... I see. I'm not so sure about that though", which for me seems like a strong indication that Akane-chan, in fact, does not believe whatever she is told at all, and the previous variant was a mistranslation.
Updated by fj825