Aka Akasaka followed up Kaguya-sama: Love is War, and the latter is very different from the former.

Source: https://gamerant.com/best-anime-hidive-action-adventure/

Akasaka put deliberate effort into making the characters as bright and engaging as possible, even admitting recently to having killed off Ai Hoshino so she wouldn't overshadow the deuteragonists of the series, the Hoshino Twins.

Source: https://www.cbr.com/oshi-no-ko-episode-5-release-date-time/

Based on the first arc of the manga by Aka Akasaka (the popular mangaka of ) and Mengo Yokoyari, the episode sets up the premise of the show going forward.

Source: https://screenrant.com/fullmetal-alchemist-brotherhood-my-anime-list-oshi-no-ko/