After being coerced into attending a mixer by her friends, Kotoko finds herself enamoured with another girl there, the mysterious and radiant Tsutsuji.

1. The Girls' Arcadia: Erosion
   
2. The Girls' Arcadia: Elysium
   
3. The Girls' Arcadia: Emotional
   
4. Ribbons Untie, Frills Melt (リボンはほどけるフリルは溶ける)
   
5. What is Love? (愛とか恋とかわからない)
   
6. Afterwards (その後)
   
7. Remembrance of Arcadia (追憶のアルカディア)
   
8. Becoming Cute, Becoming Clean (かわいくなって、きれいになって)
   
9. Narumi and Kashiwagi (なるみと柏木)