All of the stories are messed up but the one about 2 brothers was a bit of lazy plot. Too many holes. I also thought the yandere predictable. About the servant... he just clearly have poor taste in men lol I mean, his master is a rude, inconsiderate idiot, very minimal intelligence, who in the beginning was also mean to him. How one fall in love for such person? lol
Mezame no Mori