Link's Awakening (Cagiva)
In the Link's Awakening manga by Ataru Cagiva, Link finds the Tail Key after saving Tarin in the Mysterious Forest. Following the Owl's words, Link arrives to Tail Cave and opens it with the Tail Key. Inside he fights various enemies, Spike Roller, and finally Moldorm. After the boss's defeat, the chamber to the Full Moon Cello opens up.