Save the Avengers Heroes

Traveling through the Avengers of American comics may be the dream of many people! Unexpectedly, I would be chosen to be a time traveler in the American Comics Avengers! What, this system is so broken? There is only one invincible defense skill at the beginning, and upgrading depends on completing missions! However, since I have been allowed to travel through time, I must do something great. The heroes of the Avengers will be saved by me! Comrades who like Marvel, let's join the rescue journey together!