According to the friendly agreement Lyra and Amalia had signed earlier, Astrid would spend Monday, Wednesday, Friday, Tuesday, Thursday, and Saturday nights staying in turn in the bedrooms of the Holy Light Knight and the Empress of the Empire, while Sunday, being the end of the week, was the night the two of them could share their beloved together.
Originally, Amalia planned to do something fun with her sister first, hoping the bashful Lyra would hear and back down, that was her subtle scheme.
After all, they'd already agreed that on Sundays they could both have the sister, but if Lyra felt too embarrassed for some psychological reason to come over, it wouldn't be Amalia's fault.
They were ordinary people drunk on a beautiful romance; occasional lapses of restraint were normal. It just so happened the timing landed right now.
