Boy's Abyss - Vol. 17 Ch. 166 - Fumbling

[Hacete]

Ok, a bit unrelated question.
Do people really not lock or have no locks in their bathroom window?
Or this was done for the plot convenience

 

[CookieMonster]

And now this dumbass asking Nagi to come with him. Probably to leave her again on another road to Tokyo while saying that he can't actually go any further cause he can't leave this town