He successfully charms every heroine and comes back to his world only to get rejected. He gets hella depressed and loses his will to live or smth. Then the goddess realizing that yes the heroines now know what love is but even without the memories of the mc they stull love him so she sends the girls to his world to make him believe in love the same way he did to the girls.
Im gonna spoiler this just incase this has a novel and I accidentally spoiled the plot