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>You have to do at least 15 minutes on intense backtracking, solver a horrendously annoying puzzle, that also requires extensive backtracking and will likely take you around 20 minutes unless you looked up a guide and didn't lose your sanity, forces you to face a pretty tough boss fight against a load of Water type mons, then after all that, you have to find a hidden entrance to an area, activate a panel, backtrack all the way to the hidden entrance to the back of Aquamarine Cave, then enter the Garufan door you opened, only to get a mediocre Crest, peak Rejuvenation.