She's the teacher at the school where the main characters of "Memories Off 2nd" attend. She also happens to live in the same apartment building/dorm as the lead male character.

Shirakawa Hotaru, a girl who's in love with Inami Ken, finally confesses her love. From there on, they were happy couples, until one summer. Ken met a new friend, Tobise Tomoe, who is Hotaru's best friend. Tomoe seems to have her own charm. Ken, now have two paths to choose from; to be with Shirakawa Hotaru or Tobise Tomoe. Otherwise, he will lose them both.
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(Source: Anime News Network)

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She got married in 2020 to a man from outside the anime industry. 

Tsubame Minami