What is the most logical next event?

How to get the hylian shield in legend of zelda skyward sword
Go to lanayru gorge and talk to the thunder dragon.
Choose the lightning round mini-game and select the boss battle option. Start battling bosses that you have fought in the past.
He will talk about a " very sturdy shield ". Bear in mind, except from the shield you have equipped, when facing the boss, you only have the equipment you had at the time.