HP: Professor, I'm Harry's Eldest Sister

The heroine is Mi LiPotter, Harry Potter's twin sister. I grew up with Evans' grandparents, very close to Spider End Alley. When I was a kid, I had a magic pill. I went up to the house and uncovered the tiles. The house I climbed up was the house in the Spider End Alley, and the tiles I uncovered were the tiles in the Spider End Alley. When he grows up, he looks exactly like Lily, except for his eyes... Just kidding, his eyes also look like Lily. In the same grade as my brother, he is also in Gryffindor. Keep in mind that when Snape was a child, he did not care about the favor of the emperor, and defended Snape unconditionally, even confronting his brother in front of Potions class: "I think Professor Snape is very good! You can't target him just because he's ugly!" Snape, who just walked into the classroom: Thank you... Snape couldn't believe that this little face that looked exactly like Lily Evans actually had a venomous mouth that followed Snape.