Rui headcanon.
-left handed.
-184cm tall.
-always wears a watch.
-does not seem to understand other people's embarrassment over physical things.
-cannot stand bullying.
-speaks as little as possible. possibly has trouble communicating effectively.
-has very good understanding of interpersonal situations and subtle emotional details.
-extremely possessive of Tsukasa and Makino.
-prefers to wear neutral colors. black/white/cream/grey/khaki/occasional blue.
-not quite psychonormative. possibly an extremely high-functioning autistic, possibly just odd.
-has a problem with too much noise or too much movement around him. possible social anxiety. can be the center of public attention as long as he doesn't have to speak.
-sleeps a lot, can sleep ANYWHERE as long as he has a book to block the light.
-will wake up if strange people are close to him, but not if it's familiar people.
-parents are dead. no siblings.
-heir apparent to the Hanazawa Corp. Does not particularly care for it, and makes this public knowledge, but knows he's going to have to take the company in the end, and is quietly reading up on it.
-travels more than F4 is aware of.
-speaks at least: Japanese, English, French, Italian. Likely speaks other languages as well.
-can play: violin, piano, guitar. and apparently HARMONICA.
-can cook. cannot make salad.
-has learned to garden and do his own laundry.
-can cut hair.
-ridiculous stalking powers.
-can drive and ride a motorcycle.
-prefers to have his body covered up all the time, but also has no sense of shame.
-will cuddle in his sleep.
-is ticklish but only on his sides and the backs of his knees.
-can hold his liquor, but is a sweet, snuggly/drapey drunk.
-loves animals of all kinds, and they like him back. especially good with horses. attached to the babydragon.
-reads a lot of poetry, and can recite. it's easier to use someone else's words than his own.
-is pretty good with kids, if they're all right with him being quiet.
-is meticulous about small things--his handwriting is very neat, his books are well-kept, his clothes always put away, socks properly paired, etc. likes the space around him to be orderly, and only accepts mess from Tsukasa.