Longlong, also known as Ronron, is one of the three Tea Sprites operating and residing at the "Cafe-Drop" in Shizuku Forest. She is the brown sister within the trio, distinct from Midoriko (green) and Letty (red). Her brown coloration marks her identity. Longlong possesses notable physical strength and combat skill, often fighting with nunchucks during confrontations or adventures, contrasting with Midoriko's naginata and Letty's frying pans.

She works alongside her sisters managing Cafe-Drop's daily operations, contributing to its role as a forest community hub. Her strength also proves valuable in action scenarios beyond the café. The Tea Sprites cooperate in running the establishment while sometimes joining escapades involving other residents like Shizuku and Uruoi.

Longlong's background centers on her familial connection to the Tea Sprites, with no detailed origin or significant evolution documented in official media. She appears consistently in both "Pururun! Shizuku-chan" and "Pururun! Shizuku-chan Aha," maintaining her established role and attributes. She does not appear in the later series "Picchipichi Shizuku-chan" or the "NiJiRo Fairy" spin-off manga, which reimagines other characters but omits her. No additional backstory, personal relationships beyond her sisters, or involvement in movies, OVAs, or other expanded media exists for her.