After her boyfriend breaks up with her for another girl, college student Akane Kinoshita wrestles with a broken heart and the memories he left behind. Loading up Forest of Savior, the MMO they used to play together, she forms a plan to get back at her ex-boyfriend through an in-person event for the game. In the process, she runs into someone unexpected: Akito Yamada, a gaming legend who just happens to be her guildmate.

Desperate for support, Akane ropes the asocial Yamada into helping with her scheme and lending her a shoulder to cry on. The differences between Akane and Yamada soon become apparent as they spend time together, yet they cannot help but notice each other's inner qualities. As the two gain more experience with one another in and out of the game, their tentative acquaintance may level up in a way neither expects.

Yamada-kun to Lv999 no Koi wo Suru was released on Blu-ray and DVD in seven volumes from June 28, 2023, to December 24, 2023.