NANA

研究正文明确给出占据主线的男性恋爱对象、异性恋主线或男性中心后宫结构。 The female-female bond is central friendship, while heterosexual relationships with men are major narrative structures. The cited official material does not identify the two Nanas as a romantic couple. 剧情依据：Nana Komatsu moves to Tokyo after repeated boyfriend problems, while Nana Osaki pursues a rock career. The two adult women meet, live together, and become best friends while their music careers and romantic lives intertwine. 结局范围：The specific ending and stopping point of the anime adaptation require episode-level verification. 男性关系：extensive_and_central_heterosexual_romances_and_boyfriend_history_are_explicit_in_official_franchise_material 关系背叛：relationship_overlap_and_romantic_complications_exist_but_specific_ntr_classification_requires_episode-level_review 亲密内容：official franchise description explicitly includes sex; adaptation-specific explicitness not fully reviewed 参与者：adult cast; the two leads are introduced as twenty-year-old women and male partners are central 年龄与同意：main leads are adults; detailed consent issues unresolved 强迫与控制：not established by cited public synopsis 暴力与恐怖：not a primary feature in cited synopsis; detailed risks unresolved 待补证：Verify which manga chapters the anime adapts and its exact stopping point. Review anime-specific consent, pregnancy, infidelity, and relationship-overlap details. 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。