Like the title says, I'm trying to find the name of a manga series I read before. there were only 4 volumes and each one had a season on the cover (i.e. volume one was spring). The male MC was someone who worked for cupid or something to nurture love by taking it from people before their love died and gave it to new people so it could grow. The female MC finds out about this by breaking into his basement and finding a massive library of journals the guy has kept. He is supposed to be forbidden to fall in love. Does anyone know what I'm talking about? If so please tell me, ive been hunt for this series for a few years now.

X Trench Run