Seven Deadly Haibane

This is basically correct.
The correct pairing, however, is in fact:

Nemu <-> sloth
Reki <-> pride
Hikari <-> gluttony
Kana <-> greed
Kuu <-> envy
Midori <-> wrath
Hyouko <-> lust

In a TV interview, ABe implied the existence of several Easter
Eggs in HR.What I can come up quickly with is this. Maybe
the world needs www.HaibaneRenmeiOverinterpretation.org ?