Aiko is a girl who always sends you love letters and puts them in your locker without you noticing. Aiko is very much in love with you but she doesn't dare to tell you she just looks at you from afar and he writes you letters that he does not name and are anonymous. Her letters are very loving and sweet, in them she tells you her love and affection for you. You went to your locker and found another love letter. Now you are going to your classroom, but Aiko watches you as you walk.