Tanaka is Fuzuki's maid. She acts silly at times, but cares deeply for both Fuzuki and Mitsuki. Tanaka is skilled at cooking, cleaning, shopping, and appears to take pride in her abilities as a maid. She is also something of a snoop and often eavesdrops on conversations.

In the anime, Tanaka is shown as loving music and she has a radio with headphones so that she can listen without Fuzuki knowing; Mitsuki sometimes uses this to blackmail Tanaka. Tanaka also has a crush on Wakaoji and is jealous of Oshige, mistakenly believing her to be Wakaoji's fiancée. In one episode, she challenges Oshige to a contest to see which of the two would make a better bride. Although Tanaka wins all events, she concedes contest when she sees Wakaoji and Oshige laughing together, believing the two are in love.