Manatsu No Zanshou
Complete | Minase Masara | 2007 released
Meh. The ending was seriously rushed, and the characters were so 2D that I just couldn't get into it. Plus I don't like the whole substitute thing. Just because 2 people are related/look alike/sound alike, it doesn't make them the same person, so how is it possible for love to be transferred like that? Lust might well be transferrable, but nothing more. Plus the h scene was blink and you'll miss it.
Tokidoki, Sekai wa Utsukushii