Marriage Blue

Based on a game by Lune TeamBitters. Masaharu and his fiancée Sayaka are in the midst of preparing for their upcoming wedding. Masaharu's sister, Misato, is managing the planning and arrangements with the assistance of her lover, Kaneko Ryuuji, who has been known to the family since their college years. While the preparations initially proceed without issue, Ryuuji develops a specific interest in Sayaka after seeing her fitted for her wedding dress. An opportunity arises when Masaharu becomes occupied with work obligations and cannot attend a scheduled planning meeting. In Masaharu's absence, Ryuuji seizes the chance to act on his interest and begins to pursue Sayaka with the intent of making her his own.