@godofshade: Its not related to being clueless, its more about the Uncle never ever thought that a girl could like him, in a romantic way (plus the fact that that Elf girl is a Tsundere to making things more harder).
I mean, he was unpopular during his school life, and had to deal with a lot of swindling/blackmailing stuff as well (thus reducing his ability to trust people), then he gets sent to another world, were every single person there treats him badly and thinks he is a goblin or an orc, aka a monster and try to kill him.
I mean, he was unpopular during his school life, and had to deal with a lot of swindling/blackmailing stuff as well (thus reducing his ability to trust people), then he gets sent to another world, were every single person there treats him badly and thinks he is a goblin or an orc, aka a monster and try to kill him.