No Doubt Lilac

Ataru is described as clumsy, easygoing, and kind-hearted, while Kyousuke is intelligent, reserved, and helpful. Despite their contrasting personalities, they share a close bond. Kyousuke eventually comes to realize he is in love with Ataru, which he perceives as a betrayal of their friendship. He chooses to suppress his emotions, leading to an unspoken tension between them. This unresolved issue marks the start of a growing rift that appears difficult to mend.