Itsumi has personality points and interests, something not every ancestral Sim has. She is completely resurrectable, even though she doesn't have a grave. Itsumi has the Romanceaspiration, and the Virgozodiac sign. As far as personality, she is very neat, somewhat active, and a little bit nice, but she is very shy, and quite serious.
According to Itsumi's SimDNA in SimPE, her hair was red before it turned grey. According to her age data, she had 13 days left in the elderlife stage when she died. Itsumi's facial structure is seemingly identical to the 4th Maxis face template in Create a Sim. While all the memories of pre-made playable Sims in Riverblossom Hills are positive, she has negative memories of her husband and daughter in-law's deaths.