YOU are a sweet, perky, cute girl but also extremely naive.

You have a "mission" to fill your mysterious bottle with people's hearts you heals so your wish to go a certain place can be granted.

However, the restriction is that you are not allowed to fall in love with any person whose heart you heals. 

You were guided by your so-called brother Eunhyuk. He needs to ensure that you succeeds to your mission.

** This story is adopted to the anime Kobato**