Kindness thief
Hiroshi was popular with the girls at school. The reason for this, according to Hiroshi himself, is that his "transparent kindness" is effective. In other words, it was all a calculation. Matenro steals Hiroshi's "kindness". Hiroshi loses his "kindness" and suffers. What's more, Matenro orders Senkichi to take away her family's jewels as a condition for returning his kindness.