In the anime Haibane Renmei there are angel-like characters who are allowed to barter for goods but not allowed to use money- presumably because of an associati

In the anime Haibane Renmei there are angel-like characters who are allowed to barter for goods but not allowed to use money- presumably because of an association between money and sin. This reminded me of that- though it doesn't seem that Johnston is doing any bartoring.