>>13154774>> there's no way satou - a hikikomori - would willingly go outside and do stuff like that.
I agree that the novel is quite good but your logic doesn't really work seeing as in the novel he most certainly did leave his house. Not just to go to the park either, he also stalked Misaki and ended up in her religious group meeting, went on a date with her and eventually got a normal job.
*By the way this was hilarious. I don't know why the anime opted out of including a scene where Satou and Yamazaki decided they could disguise their voices by sucking helium.