Starting in a medieval setting where knowledge about different worlds isn't uncommon the heroine, Faery, a future countess to be, meets Astrifer, a scientist from another world. Despite some minor obstacles and complaints from her recently appointed guard Gawain her dream of travelling different worlds is fullfiled. During travels they meet a new companion, Leon, a kind stranger from a modern world who easily accepts the concept of other worlds. Soon she comes to realize that travelling isn't just all fun and games and along the way she realizes the true nature of her world and uncovers hidden facts about herself...

[From Itch.io]