Six of the seven English volumes published in North America at the time charted on `` The New York Times Manga Best Seller '' list for the week of October 13 , 2013 , and volume one was on the list for 81 weeks straight .
Six of the seven English volumes that were published in North America have charted on The New York Times Manga Best Seller list for the week of October 13 , 2013 , with volume one having been on the list for 19 weeks .