ボクと三人のお姉さま ～おねえさん達と孕ませOK嫁選び同棲ライフ！～

The protagonist, Kaguragi Akira, is the heir to the global company Kaguragi Group which holds vast assets. According to the family tradition, he left his parents to live a common life for social training. His caretaker, the aunt Kenzaki Akane, informs him that his father, Kaguragi Takahiko, the top executive, has fallen critically ill and needs to name a successor soon. The company's management insists on a blood relative as his successor, and specifically, his future wife, so she requests Akira to choose a bride from two candidates. Although Akira is hesitant and is having difficulty finding a girlfriend since he lives the life of an ordinary student, he ultimately decides to select a future wife to put his ailing father at ease. Two women make it to the final list: Astrid Nordgren, a daughter of the leader of a foreign company, and Yamashiro Wakaba, daughter of a prominent hospital director, whom his father admirers. Their behavior during the interview is unexpected, and Akira struggles to manage their responses, causing him great confusion. He knows that his future life will be far from dull.