Takarakuji de 40-oku Atattanda kedo Isekai ni Ijuusuru
宝くじで40億当たったんだけど異世界に移住する
Kazura wins a 4 billion yen lottery and seeks a secluded family home to avoid those seeking his wealth. While exploring the property, he discovers a room that allows travel to another world with a less advanced culture and technology. He occasionally transports items and knowledge to this world, where he begins to understand his own true worth.