: Find her outside her house in Radat (near the laundry area). Speak to her with Freed Y in your party, and she will join the Stars of Destiny to be with her husband. Combat Profile Weapon : Naginata (Long-range).

I'm not quite sure which you are referring to, as there are a few different possibilities. Did you mean the historical figure and her family lineage, the character from the Date A Live series, or perhaps a specific literary work

: You could be researching a specific historical figure or a family lineage involving a person named Yosino.

: Travel to Radat Town after the events at Greenhill or during the liberation of the South Window region.

: You must have Freed Y in your active party to recruit her.