Blade can be a fun sparring buddy to have! Given his more childlike personality I can see this going in some sibling-like direction, if Daigo is ok with Blade's kookiness. (I mean, Yakuza can get fairly goofy so it might not be too weird.)

Maybe they can put their minds together and make a fantasy vehicle...whatever that is. 8'>

In any case, I'm very interested in having these two interact, as a fellow Yakuza fan myself especially!