Given

研究支持以男性之间的恋爱为重要内容，不能作为女性恋爱核心作品推荐。 The central romantic structure is male/male, especially Ritsuka and Mafuyu; additional male band relationships are part of the wider series. 剧情依据：A high-school guitarist who has lost his passion for music meets Mafuyu, teaches him guitar, and becomes involved with his voice, grief, and their developing band. 结局范围：The reviewed anime platform lists the television series and film, but its synopsis does not state the television ending in detail. 男性关系：central_male_male_romance 关系背叛：not_found_in_reviewed_sources 亲密内容：licensed_platform_lists_adult_or_romantic_content_without_scene_level_detail 参与者：male_cast_exact_ages_not_fully_verified 年龄与同意：high_school_characters_present 强迫与控制：not_established 暴力与恐怖：grief_and_emotional_distress 待补证：Verify episode-specific ending details if needed. 基于既有研究资料作出的 AI 评级；未重新抓取外部资料。未知项不表示安全或不存在。