Travel to the World of Otome Games and Intercept the Heroine of Destiny

When a substitute liver travels through time and becomes a passerby in the world of B games, When the fate of the destined heroine of the B game world was stolen, No? Isn't this a magical world? Why are there super-era mechas? Don't worry about this for now, the original plot requires the heroine of Destiny to realize the power of love and defeat the final boss! But can this world still be saved now?