From what I gather TK seems to be a serious guy. Some have said stoic and I would agree. He is not that expressive except when there are light moments and TK breaks out into unexpected laughter. TK's smile is wonderful! Naked and open. Given that he seems pretty authentic and approachable. While TK is serious for the most part, he does have a sense of humor evidenced by the fact TK likes to play April Fool's jokes on April 1st with fans on social media. Even when he had his photo blog in the past his wry sense of humor was pretty evident.
As to Toru's likes
-He likes coffee.
-He likes pancakes.
-He likes penguins.
-He likes sound production (i.e. he is an audiophile).
-TK's favorite color might be blue, then green.
-He wears a lot of black, in fact, it is a rare sight for TK to not be wearing black.
-He likes scented candles.
-He likes growing plants and he likes flowers.
-He likes British culture especially when his band's name Ling tosite sigure which means "a frigid autumn's rain shower" got its name from what I think is how TK sees England. As in "a frigid autumn's rain shower" literally stands for England.
-TK likes sweets.
-TK likes to travel a lot.
-TK likes photography.
-TK likes Danish teak furniture pieces.
Toru's dislikes
-TK does not like spicy food.
Despite knowing more about TK-san over the last few years I still think he is mysterious. Like a stranger. You can be very close to a music artist but when you really think about it beyond their music you do not know much about them. Who knows if they are a crappy person or a genuinely decent person.