I'm new to yamashita fandom, just found Buzzer Beat, NwP, Kurosagi, and Stand Up recently, must say I loved his characters alot... just began to watch Monsters too, IMO it wasnt that bad, quite liked the plot and the idea of detective and comedy!! but yeah I must agree his character was too goofy!! I dont mind with the forced laughter though, since it was supposed to be 'forced' IMO, he only laughed that way whenever being put in an awkward situation with Singo right? so plot wise its like his silly awkward character trying to pretend being all relax in front of a co worker yet could only manage doing a stupid awkward laugh, over-analyze it much? maybe lol. anyway Akira was a better dork character than Kosuke IMO, way more natural! so I kind of wondering what make Yamapi's acting feels kinda different in Monster, I come up with this: maybe as Akira he was simply being in the dork side of the real him, so it wasnt really 100% acting and thats what makes it sooo believable, while as Kosuke, i feel like hes totally trying to play as somebody else whom he's not really familiar with. In fact I think Yamapi most of the time acted as himself in every characters he has played! but as Kosuke its really different story, I feel like he doesnt have that Kosuke-kind-of-goofiness side in him, so he must come up with a totally new character and the real challenge in acting just actually began! must say Im glad that he got to play this character, hoping he would learn many thing from here!