Mayuka Nasu

Cygnus's bridge crew member and Elvira Hill's aid but practical matters are left in her care. She's honest and straightforward, but a bit shy. She was one of the first people to interact with Aoba upon his arrival to the Cygnus. She seems to have feelings for Aoba and worries that if given the chance Aoba would leave them and return to his own time period. (Source: Wikipedia)