Goddamn it. My sister is one of the love interests again.

Ever started an eroge and sighed cause the love interests are your childhood friend, your cousin that you haven't seen in 10 years, and your sister again? If you're hardcore, maybe the mother is involved... It's always a facepalm to the... face... but some of them are actually hilarious. Always gotta turn off my brain and reset every Sunday. Even if the heroines aren't related to the protagonist... he always has to have that suspicious overly flirty sister that has breasts that fill up half the screen...