Ep. 6: Sumika's Letter and Ginko's Sacrifice at Kureha's Birthday
Aired on February 10, 2015

6
A flashback reveals Sumika writing a letter for Kureha’s birthday, reflecting on their bond and a book by Reia. Excluded from the Invisible Storm for not voting to exclude Kureha, Sumika was coerced by Kaoru to announce Kaoru as her new friend for protection. In the present, Lulu assists Ginko in escaping Kaoru, who collaborates with a secret partner regarding the bears' identities. During Kureha’s birthday party, Kaoru exposes her deception by burning Sumika’s letter. Despite injuries, Ginko risks her life to save the letter. Kureha reads the rescued letter, finding new meaning in Sumika’s message that those present are her true friends. A final flashback shows Ginko witnessing Mitsuko attack Sumika without intervening.
Episodes
- Ep. 2 · Ginko and Lulu confront Mitsuko while Kureha faces a bear attack from Konomi Yurikawa.
- Ep. 3 · Kureha confronts Mitsuko as the bear who killed Sumika while Ginko and Lulu intervene.
- Ep. 4 · Lulu reflects on her past with Milne before joining Ginko's journey to deliver a promise kiss.
- Ep. 5 · Kureha rejects friendship while Ginko and Lulu uncover Kaoru's plot against her
- Ep. 6 · Sumika's Letter and Ginko's Sacrifice at Kureha's Birthday
- Ep. 7 · Kaoru's partner betrays her, while Kureha recalls a forgotten friend connected to Ginko's past.
- Ep. 8 · Yurika reveals Ginko and Lulu are bears and accuses them of killing Reia.
- Ep. 9 · Mitsuko merges with Ginko while the Invisible Storm suspects a hidden bear among classmates.
- Ep. 10 · Kureha confronts her past with Ginko while protecting Lulu from the Invisible Storm.