Takarakuji de 40-oku Atattanda kedo Isekai ni Ijuusuru

Kazura impulsively purchased a lottery ticket and unexpectedly won 4 billion yen. To avoid those seeking to take advantage of his sudden wealth, he retreated to an inherited family home. While exploring the property, he discovered a room that allowed passage to another world. This world had a less advanced culture and technology. Kazura occasionally transported items and knowledge between the two worlds. Through these actions, he began to understand his own true worth.