Renga is an ancient Japanese collaborative poetry game where participants take turns writing stanzas that are linked by imagery. Each stanza can be a haiku, consisting of 3 lines with a 5-7-5 syllable structure, or a couplet of 2 lines of 7 syllables each. A new stanza should incorporate an image from the previous one through parallel imagery, contrasting imagery, or shifting focus while also continuing or contrasting the mood. The goal is to have the linked stanzas explore an overarching topic from different angles in a conversational style.