[Yuan is expecting something more to come after that, honestly, and so he's looking at Kratos for several seconds after.]

[When it's apparent that nothing more is forthcoming, Yuan can't himself decide if it's because Kratos has no idea how to converse like a person, or because he isn't interested in speaking. The silence has grown awkward by the time Yuan prods again.]

Then how haven't you developed a preference?

[Obviously Kratos does have them. The tomato plant currently occupying Yuan's room is proof enough of that. To not have developed tastes within a hobby he genuinely likes seems... either deprived or enthusiastic to Yuan.]

[As per usual with Kratos, it's difficult to tell which.]