Beginning with the Great Ninja War: Traveling Across All Realms with My Aunt

As the invincible Demon King Linyuan in this world, he obtained the Almighty Summoning System because of his excessive strength. The system can not only summon countless anime and novel characters, but can even travel through countless different worlds. Bite! Every time the host takes in a harem, the system can increase the experience value by one point. ..... Mizukage Terumi Mei: "Only you are the real man, and you have given me unprecedented satisfaction!" Loli Tatsumaki: "You are the first strong person to impress me. I want to bring my sister with me to join your organization!" Rem: "Rem wants to give birth to a bunch of cute children for the Demon King! If the master doesn't dislike it!" Robin and Nami: "Master Linyuan is so cute, let's take a bath for you together!" ..... "Linyuan! Come and put me to sleep!" "Auntie... I'm afraid... It's not very convenient, right?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.