Yuri Bear Storm Vol 3

From the Tokyopop edition

When Lulu decides to bring Yuriika and Kale with her to Japan to meet with Sumika, the two discover memories of how they both came to love the same woman -- only for her to end up married to a man she had just met. Their relationship was the start of everything... and then, tragedy struck. What will Kureha do when she discovers the truth?

Source: Penguin Random House API