The Descendant of Elves and Dragons, Am I No Longer a Human Being?

[Sword and magic + medieval + dragon + knight + elf + princess + wizard + adventurer + multiple heroines] A stranger from time travel? Abandoned orphan? Descendants of elves and dragons? If you are given three ways: "It's not a bad idea to become a famous and wealthy businessman and open a harem in another world." "Become an ordinary adventurer and lose your life in the adventure!" "Become a warrior, set up a bow and arrow, pick up a sword, and travel across time just to save the world!" Ryan: There's actually another option. "I want to be a brave man who opens a harem during adventures and saves the world!"