Why does the user of Draining Kiss get an Attack Drop when the attack is protected by King's Shield?

Question

When the opponent uses Draining Kiss and an Aegislash uses King's Shield the situation comes out like this:
The opposing Sylveon used Draining Kiss!
Aegislash used King's Shield
Sylveon's attack harshly fell!
Why does attack fail? Is it a contact special move?

Answer 1

It's a special move that makes physical contact
Source: Do you even kiss brah?

Comments

For the record, he knows this by  snogging various users off the server.
/me fleez

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Y u tell them ;-;