June

June is a long-haired brunette with bright green eyes wearing a blue librarian uniform that warmly greets Kokoro as her roommate when she is sent on a librarian training course. June explains that she is a comparoid -- a type of android that has parallels to the persocoms in Chobits -- developed by Nakanishi Industry and sent to attend the training session to appraise the quality of her programming and the utilization of the library-related data installed in her electronic brain as a new development. Much to Kokoro's pleasant surprise, June does not oppressively wield her emphasis on efficiency when she counsels Kokoro on how to conquer the training session.

She learns what it means to be a librarian from Kokoro.