1x7 - Walkure Romanze

Akane finds herself weak as she admires Celia just way too much. She decides that she must undergo training to overcome this, but rain comes instead. She goes to find shelter in a windmill, and finds Celia there, as well. There's trouble, and they find themselves unable to leave the windmill. Takahiro realizes something is up, and he comes to find them, but you'll never believe what happens...