My Bad-Girl Girlfriend Is Way Too Cute!

College student Lin Yu has had a crush on the campus beauty, Zhang Shiyao, for ages. After his roommates urge him on again and again, he finally sits down to write her a love letter, only for it to end up in the hands of the school's “bad girl” by mistake.

And to make matters worse, she actually says yes?

On one side, he has to tread carefully around his “human Gundam” girlfriend. On the other, he has a deadly secret: he sent the love letter to the wrong person. If it gets out, he'll die of embarrassment! Just what kind of absurd yet heart-fluttering sparks will fly from a romance that began with a mix-up?