Customer Blox Fruits: hints for the Second Sea

The Customer is the client leaning at the counter of the Café, in Second Sea, right next to the Manager. He sells nothing and gives no quests: he chats, and his lines change regularly. Behind the humor, each one is a hint about a sea secret, from the Fist of Darkness to Don Swan's glasses. If you've just arrived in Second Sea, he's the most rewarding NPC to talk to multiple times in a row.

How to get it

At the Café, in Second Sea: he stands at the counter, right next to the Manager. Talk to him multiple times in a row, and he changes his line. He's been in the game since Update 8.

What he tells you

His line, in essence	What it means
What Darkbeard was buried with is quite a collectible: you can trade it for a new boat, a combat style, a slingshot, a stats refund, or even a race reroll.	Originally he was talking about the Rare Artifact. Today the line refers to Fragments and what they allow you to buy: the Flower Ship, Dragon Breath, the Kabucha, the Stats Refund from Plokster, and the Race Reroll from Norp.
If you're looking for the Fist of Darkness, I advise you not to search chests at random. Wait...	Actually, you should. A Fist of Darkness appears in a freshly-generated chest every four hours since the server launched.
They say a special flower only grows at night.	Hint about the blue flower, which only appears once night falls.
Have you heard about awakening your hidden abilities? I haven't either, but an alchemist set up on the other side of the bridge claims he can help me. I told him no thanks, all I need is help getting out of bed.	Refers to the Alchemist's quest, with a pun in passing.
The tall guy upstairs has some killer glasses. No, not that tall guy! I'm talking about the guy in pink who runs the city. His glasses are collectible - try to grab them next time you run into him.	The tall guy he's brushing off is Trevor. The one he's talking about is Don Swan, in his mansion: he drops the Swan Glasses once defeated.
When the Fruit Factory explodes, the player who dealt the most damage walks away with a random fruit from the factory.	Talks about the Factory raid. Hearing it also means the raid is close to starting.
Do you know the legendary sword dealer? He hangs out here from time to time. Well... not exactly with me. Talk to the Manager when you've been here for a while.	Refers to the Legendary Sword Dealer and the Manager: you have to complete the Colosseum Quest to be able to talk to him.
Did you know that Sea Beasts sometimes drop accessories, and very rarely the Fist of Darkness? I bet you didn't.	Sea Beasts can drop the Choppa and Top Hat accessories, and have a small chance to drop a Fist of Darkness.

Why talk to him

His only role is informative: he has no shop, no quest, no combat. Since his lines rotate, you need to talk to him multiple times to hear them all. For a player discovering Second Sea, he's a shortcut to several secrets you'd otherwise only find by searching at random or reading a guide.