Your Letter (manga)

When middle schooler Sori Lee stood up for her friend against their entire class, she never expected to become their new target—but that’s exactly what happens. So, when her friend decides to transfer schools, Sori decides to wipe the slate clean and does the same. Luckily, someone seems to be looking out for her this time, and on her first day, she finds a mysterious letter taped to the bottom of her desk inviting her on a scavenger hunt! Sori follows the trail of clues to try and uncover the identity of her benefactor, and as she explores all the curious and wonderful people and places around the school, begins to open her heart once more...