Introduction: It was a normal day for 17 years old Hilda untill she suddenly fell asleep while standing and met her future self in her dream."Young me, take this and enter the tower early and climb to the highest floor"Nope, even if this wasn't a prank, I have no reason to go and risk my life to do so."If you do not, than the boss at the 100th will descend in 20 years and kill everyone in the tower"Once again, not my problem"Including our sister who will enter the tower in five years"Oh...Mc really likes her sister.MC won't be the strongest, but one of the strongest with most of her skills not directly being combat skills, but will have some op ones.Weak to strong....