The L'étranger series (Japanese: エトランゼシリーズ, Hepburn: Etoranze Shirīzu; lit. "Stranger series") is a Japanese boys' love (BL) manga series written and illustrated by Kanna Kii. The first book, L'étranger de la Plage (海辺のエトランゼ, Umibe no Etoranze; also titled Seaside Stranger or The Stranger by the Shore in the English versions), was serialized in the bimonthly manga magazine On BLUE from 2013 to 2014. It was followed up with a sequel series, L'étranger du Zéphyr (春風のエトランゼ, Harukaze no Etoranze; lit. "Stranger in the Spring Breeze"). L'étranger de la Plage has been published in English by the digital distribution platform Renta! under the title The Stranger by the Beach, and by Seven Seas Entertainment under the title Seaside Stranger. An anime film adaptation produced by Studio Hibari premiered on September 11, 2020.