【Content Description】 Ordinary office worker Hino Mariya wins the first prize in a lottery she casually bought one day, instantly becoming a millionaire! While dreaming about how to spend the enormous sum of 300 million yen, Mariya accidentally drops her bankbook. Then, the beautiful girl Tsujido Tenma, who happens to find the bankbook, proposes that in exchange for returning it, she should support her instead…!? 【Table of Contents】 Episodes 1 to 12 included Bonus manga drawn specifically for this edition!