Midori Lin is a very kind and friendly heroine who is always ready to help, even though she is rather cowardly. She also loves to chat and has an interest in the life of being a school supervisor. Midori is secretly insecure about herself and admires Saori, who is nothing like her. She has even thought about dying her hair green to match Saori's appearance. When Saori tells her not to do that, she immediately agrees, proving that Midori would rather not do anything that Saori disapproves of.