20 July B 145 cm

Fumi is a student in Seio Girl's School one year under Chihaya and Kaoruko. The Watarai family has worked under the Kisakinomiya family for generations, therefore she is Chihaya's and his mother's maid.

Fumi attended Seio Girl's School even before Chihaya's transferred, and after he entered the school she moved to the dormitory building with him. She is loyal to Chihaya and always gives top priority to him.

Fumi seldom betrays her feelings. But she becomes so silent when she gets in a bad mood, and even Chihaya finds it difficult to restore her good humor.