Kitaku Tochuu de Yome to Musume ga Dekita n dakedo, Dragon datta.

Thanks to his father’s relentless hard work and a hefty two-generation mortgage, the protagonist finally achieves his dream of owning a single-family home. On the evening of moving in, he heads out on an errand at his younger brother’s request, only to stumble into a bizarre encounter. A beautiful girl with striking blue hair suddenly approaches him, desperately pleading for help and claiming that a kidnapping is taking place. Without hesitation, he springs into action, taking down the alleged perpetrator with a powerful lariat. However, instead of a typical crime scene, the aftermath reveals two enormous eggs. The moment his hands make contact with them, the shells crack open, and two baby girls emerge from within. In that astonishing instant, the mysterious blue-haired girl turns to him and joyfully declares that he is their father. What began as a simple trip to the store has instantly transformed his quiet new life, leaving him unexpectedly thrust into the role of a husband and parent to a family that is far from ordinary.