ナナとカオル [Nana to Kaoru]

A long-running romantic comedy from Hakusensha, Nana to Kaoru follows a high school boy and girl who explore a deeply unconventional dynamic to reignite the spark in their relationship. Spanning 18 issues from 2008 to 2016, the series is best known for its creator's sensitive, character-driven take on BDSM themes, treating them not as shock value but as a genuine vehicle for emotional intimacy and personal growth. Its cult appeal stems from how it balances tender, awkward romance with surprisingly thoughtful negotiation of boundaries, making it a standout in its niche.