Akihito Daiki leads an average high school life, where he consistently experiences strokes of good luck. No matter what he does, fortune always seems to smile upon him in some way or another. Although he is reluctant to acknowledge his favorable circumstances, he cannot deny that good things occur around him with great frequency. As he enters his third year, he is singularly focused on finding a girlfriend to share his life with, which is his most cherished desire.

Hoshiko Itsuki is the school's idol, renowned for her cuteness, athleticism, and intelligence. However, she is also notoriously unlucky, forcing her to plan for every possible misfortune and resulting in her becoming an overthinker. As she begins her third year, she hopes for a normal high school experience despite her ill fortune.

What happens when two individuals with opposite luck meet? Could this be the start of an incredibly caring and sweet relationship? Get ready to find out!