Special day.

Finding out that he missed only for a couple of days in Nortrig relieved him a lot. He had been thinking about how to make TiHao's birthday special and he couldn't stand the idea he might have missed it.

The Seelie though, with all the possible negativities one can try to think, gave him two very valuable things: a passage to Earth that doesn't require portal or other types of magic that would disturb him and a way to solve the long-distance problem without teleportation.
He can simply access the Court from Nortrig and leave to Earth the same way and back, plus he can use his steed-motorbike to go far and fast without needing a teleportation. For some reason, even if the court and the steed still use magic, it doesn't disturb him since it's not as visible as for spells and it doesn't affect him in any way.

It all helps him to be more effective in his evil plots regarding organising surprises for TiHao's birthday.
Initially he thought he'd really he naked whole day, but since Kun came to live with them, he wouldn't feel at ease to do that, even if he is blind and doesn't leave the room often.

He leaves the house a few times during the precious day and the same day, while TiHao is busy with Sao, taking profit of his absence to do all his things.
Of course he warns Kun and asks him if he wants to join too, but understands if he is too depressed.

For the evening itself he just planned something between them, then the next day a surprise party. He already sent the invitation to everyone they know, and don't hate, acting suspicious as f*** to Wonho's eyes.