As of the latest available raw previews (Twitter user @rengoku_rakuen leaked three unverified panels), here is what Chapter 37 appears to contain:

For the uninitiated, Rengokujima is not your typical romance manga. The subtitle Kyokuchi Renai ("Extreme Love") is the first clue. The story strands a group of characters on a mysterious, isolated island ("Purgatory Island") where the rules of society have collapsed.

The Climax of the "Mainland" Arc