This World is a Little Difficult

After waking up, I traveled to another world. The bound system was still a system without a name, could not speak, and never issued tasks. It only had an "energy bar" that increased a little every once in a while.

Fortunately, after traveling through time, he inexplicably gained the ability of absolute memory, which allowed him to not worry about his life.

Just after he embarked on the path of plagiarism, he moved to the home of his aunt, who was also from a single-parent family. His aunt had an only daughter named Kiritani Suguha...

Just after he accepted the semi-sci-fi worldview, he had just attended high school for half a year when the school suddenly announced its closure and was to merge with the Ju Wang College that had appeared out of nowhere in the same town...

The white-haired, silent lolita in front of me is fine, and the person next to me is Yuuki Asuna, which is also understandable. But what about Yuuki Mikan's sister? It seems that her sister also has a good friend named Yoshimura?

The homeroom teacher's surname is Gengdao, and he has a daughter who just got into the University of Tokyo?