Sanjo Is Just an Ordinary Person

"Yes, I'm her friend, the person who understands her better than anyone in the world." "Naive yet malicious, selfish yet kind, old-fashioned yet romantic, gentle yet cold, foolish yet clever, greedy and jealous." "That's the kind of messy, complicated person she is." "And that's why she's alone forever." The characters are out of character. The protagonist is a Mary Sue. The plot isn't good. The writing is pretty bad. Theme: All living beings suffer, just like everyone else.