My fiancée keeps getting in the way when I try to get intimate with my pink-haired girlfriend.

Eldran has been reborn in a magical world. He researches magic, creates magical tools, and enjoys a happiness that was impossible in his previous life, complete with a wonderful fiancée who understands him. However, his blissful moments with his fiancée are interrupted by a girl who is clearly another reincarnator, spouting things like "capture character" and "bug," and is intent on interfering with their intimate time together.