楠木さんは高校デビューに失敗している

Keisuke Shizuki, once an introverted middle school student, decides to reinvent himself as he enters high school, aiming for a fresh start with a more outgoing persona. However, his plans go awry when he encounters Shizuku Kusunoki, a girl from his past who also attempted a high school debut but is struggling to maintain her new image. Both share a secret history of being "former loners" or "in-crowd," and their paths cross again, complicating their attempts at blending in. As they navigate the social labyrinth of high school, their shared experiences lead to a unique bond, filled with humor, mutual support, and the challenges of true self-expression amidst the peer pressure of teenage life. (Unreviewed summary by Grok 2)