Haou actually hates sleeping
It’s because Usually is almost like when he was slumbering before awakening for the first time: only disjointed negative feelings, some sensations and a complete loss of sense of time and space. This really displeases him and make him very uncomfortable most of the time.
Rarely letting his feelings to be known except when really comfortable around somebody, Haou rarely laughs. He can count on his fingers the time he actually had a laugh - an honest, joyful laughter.
Otherwise, he usually only smirks or gives short, low chuckles
The dark king enjoys walking around, specially trekking. The nature soothes him somehow. The wind against the trees, the sound of the water on the rivers and the wildlife are calming.
But when unable to go out, Haou enjoys reviewing his deck and thinking of new strategies
❅ - keeping warm/keeping cool techniques
Warm clothes, a fireplace and maybe some cocoa
✎ - taste in music/literature
He doesn't like fiction books. Why reading about fabricated stories when he could be out living them? It doesn't makes much sense for him. However, non-fiction books are useful for him as many aspects for this world still confuses him
Haou actually enjoys rock. From Led Zeppelin, Pantera, Dio, Sepultura to Epica, Therion , Luca Turilli, Kamelot. Whenever he got the chance he finds himself listening to something. The duelist treasures the discs that hane-kuriboh gave him some time ago but wouldn't admit it
✪ - favourite food/eating habits
Much like his counterpart, Haou is found of fried shrimp and fermented soybeans. But he will likely eat anything as long it's editable
As long he is hanging out with his wife, it would be a perfect holiday.
But dueling is fine too (just not dueling his wife)
Often his sadness manifests as anger and hatred. Last time he experienced excruciating despair was when he took over the Dark World. He doesn't know other way to deal with sadness but leashing out
He experienced two 'birthdays' so far, and the last one was perfect: he hanged out with his wife. They cuddled and had sex as much as they could