Wataru could have prevented a lot of this stuff from the get go if he was honest, yeah it don't make for good drama, but Kengo was a good friend too him, and he kind of got walked all over in return. So I can sympathize with Kengo.
If they are gonna kill Kengo off (Which I don't think they will) it should be while doing something heroic, any other way would just be random and pointless.
The hand issue is a no choice thing.. if wataru tell him the truth.. how will kengo feel.. i think kengo will go mad..
Nago's issue was nago being a jerk.. which is nothing new..
i once have that kind feeling about kengo before..
until he totally become a jerk.. punching almost every men he sees and insulting every women in his way except for mio..
just becos he got such misfortunately life doesn't mean he can do such a things..
to me.. death is just too easy for him.. but well.. it's a drama..
but i will still wish him to die.. any manner.. he don't deserve a good ending.. especially right from the moment he punched wataru.. and wataru cherish him that much..