Summer Wars (サマーウォーズ) is the new Mamoru Hosada flick coming out in japan this August. Hosada made The Girl Who Leapt Through Time which is a masterpiece imo. From what I gather, this movie is about Koiso Kenji (a mathematics genius) who is home for the summer with his ridiculously large family. He cracks some code and shit gets real. This is mostly speculation (if you find a real synopsis, comment it please). The trailer makes me think he also has a prearranged marriage. The Trailer is pretty self explanatory.
Needless to say, the movie is going to be worth watching. Hosada always adds weird mixes into his movies and I’m sure it’ll be a ride.