Heroes of the Sea Lifesavers (海の勇者ライフセイバーズ,Umi no Yuusha Lifesavers?) is a Japanese manga series, written and illustrated by the manga author Kenjiro Hata. It's the previous work of Hayate no Gotoku! and takes place in the same universe. Heroes of the Sea Lifesavers was published again in Hayate no Gotoku! Lifesavers on August 18th 2010.