The Forest of Briars
A tragic lesbian romance novel causes a scandal at Lillian because the author is rumored to be none other than Sei. This prompts Sei to tell Yumi and Yoshino about her past with a girl named Kubo Shiori.
Aired 11/03/2004EP 10 - The Forest of Briars

2004
Maria Watches Over Us
At Lillian Girls’ Academy, a renowned all-girls Catholic school, pairs of girls become soeurs, or “sisters”, in order to support and guide each other during their time at school. The shy Yumi Fukuzawa thought she was far too ordinary to attract a soeur as popular and beautiful as Sachiko Ogasawara, but for some reason, Sachiko has set her sights on Yumi — but why does she want to become Yumi’s soeur, anyway, and just what will become Sachiko’s soeur entail?
(Source: Maiden Japan)