I think it is b/c Enra kisses her. Every kiss event follows with her name getting higher on the list.
Agreed. Or its because she's helping and communicating with them. Including changing them. I thinks there is one more but I forgot.
Okay, this newest chapter sort of changed my theory. B/C her name rose without a kiss. So probably intimacy, or getting Enra to stop being so hateful of all humans.
I think her sin will be falling in love with Enra or having Enra fall in love with her (=・ω・=)
I think the reason her name keeps getting higher is because Enra's dad has been spying on them, and can see that Enra is falling for the girl. Basically, daddy doesn't want Enra falling for the girl. Yama is the parent that gets in between couples. ╮(￣▽￣)╭