[quote=@Raineh Daze]
<Snipped quote by GreenGoat>

I think it's become more force of habit than anything else. Any actual vengeance is long satisfied.

[/quote]

I'd say it's [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/BelligerentSexualTension]BST[/url], but we all know that Touhou's don't think of love and stuff like that... ¬_¬