Three censored days.... the 6th day in the week... At the date of 6.... At the 6th month of a year.... 6 years had passed since their first meeting...

This couple sure is cursed as star-crossed lovers (Those above facts aren't even subtle  :'D ).

Anyway, the art and characters' feature are well-designed, they seem conversing naturally to each other despite the circumstances; which is a good approach, and the melancholy for each endings is really heart-breaking. I was kind of expecting sweet conclusion... and ther came the somber-but-also-enlighting turn of events, but then it is a beautiful way in telling the topic of death :') 

N.B. I already had bad inkling towards that too cheery and clueless bunny (or any doll-alike thing, honestly :'D )