This article examines recent developments in Japanese hybrid securities, with a particular focus on the issuance of perpetual subordinated bonds by Japan Airlines (JAL). Drawing on JAL’s landmark transaction and its concurrent introduction of bond-type class shares, the article explores the structural features, legal framework, and increasing relevance of hybrid securities for Japanese corporates seeking enhanced capital flexibility. It further highlights key procedural and market considerations, offering insights into the evolving role of hybrid securities in Japan’s capital markets.