Seven Days Series by Venio Tachibana, 橘紅緒, Rihito Takarai, 宝井理人

It is rumored that Touji Seryou, one of the more popular boys at school, would go out with anyone who asks him out on a Monday morning. But on this particular Monday morning, the first person he meets at the school gate is no other than Yuzuru Shino, Seryou’s senpai at the archery club. On a whim, and well-aware of Seryou’s reputation, Shino asks Seryou to go out with him... moreIt is rumored that Touji Seryou, one of the more popular boys at school, would go out with anyone who asks him out on a Monday morning. But on this particular Monday morning, the first person he meets at the school gate is no other than Yuzuru Shino, Seryou’s senpai at the archery club. On a whim, and well-aware of Seryou’s reputation, Shino asks Seryou to go out with him. Thinking that it will be treated as a joke, they’re both guys after all, imagine Shino’s surprise when Seryou takes him up on the offer! There is a catch, though. While Seryou does go out with the first girl who asks him out on a Monday morning, the other side of the coin is – by the end of the week, he will break up with that person. In essence, Seryou is a lover with a one-week expiration date. But will Shino prove to be the exception to that rule? less

高校三年の篠 弓弦は、月曜日の一番最初に告白してきた相手と必ずつきあい、週末に必ず別れると噂の後輩、芹生冬至と一週間限定の恋人としてつきあっている。月曜日　つきあうことになって、火曜日　意識して、水曜日　近づいて、木曜日　恋を自覚して──！　残されたのは三日間！！　一緒にいることが当たり前になったふたりだけど….