They met in the green years of campus. One is an ordinary girl who is extremely unconfident, and the other is an outstanding boy who exudes sparkle. In the poetic and romantic atmosphere of the campus, even if there are many inappropriate things, they are still attracted to each other unconsciously. But how can a snail that has been huddled in its shell endure the bright sunlight? Differences in abilities, personalities, and family backgrounds... Are like an invisible wall between them. Can they break through the obstacles and get the happiness they want?