The two male protagonists come from outer space, one lives on a planet with advanced civilization, and the other lives on a planet with very advanced space civilization. In other words, they make good use of space capabilities, such as traveling through time and space. The two male protagonists came to the earth by accident. Since they are advanced alien civilizations with long lifespans and will not die, they lived on the earth for a long time. They left during the process. During the departure, both parties lost their memory. When they met later, it was probably because of God's will that they fell in love again. This time they were together. (Purely fictional)
Intention: Study hard