Four stars for stories 2 & 3. Story 2 is a Sheith AU where Keith has chased after Shiro from college to the company where they both work, content to be the closest man in his life, until he discovers that Shiro is gay and dating a blackmailing little twink. Their names weren't actually Keith and Shiro but I couldn't think of anyone else. Anyway, that ends up fine.
Story three is about two men who form a long-distance relationship by phone when one is transferred to the company's Brazil branch.
Hito Wa Naze Hataraka Nakerebanaranai No Ka