"When angels fall with broken wings, I can't give up, I can't give in. When all is lost, And daylight ends, I'll carry you, And we will live Forever."

"No!" "What do you mean no?" "I can't love you." "Why not?" "Everyone I love, I lose." "You won't lose me." "Promise?" "Promise." Lou was just an ordinary girl, with ordinary friends. But one day her whole world disappears at the death of a loved one. She needs her best friend more than ever, but maybe she won't be around for as long as Lou would think. Lou develops her worst fear yet, Thantophobia. The fear of losing someone you love. Will Lou ever overcome her fear and allow herself to love someone again? Perhaps a certain handsome boy could help her.

You have been best friends with not only Kagamine Rin, but her twin brother, Len. The three of you have known each other since you guys were kids and now in high school, you all have changed in not only appearances, but in personalities too. But something doesn't feel right. You can easily tell that whenever you are with Len alone, you suddenly feel the awkwardness and odd tension grow more and more constantly. And that's not all; you can't help but find yourself admiring Len sometimes. It is possible that you have feelings for him but is it possible that he likes you back? Would Rin accepts this as your best friend?