Oh, and it's new, so it's clean! It makes a matching pair with mine. Hahaha... ...I think this "power" of mine is what I wanted all along. The power to protect everyone... I understand now. I'm not supposed to use it to become more self-reliant... I'm supposed to use this power to protect people... Yukiko, my friends, my family, this town... and you."
—Chie Satonaka before awakening her ultimate Persona
Through Chie's Social Link, the protagonist and Chie become closer through training together at the Samegawa Floodplain. Over time, the protagonist learns of how Chie enjoys creating groups and titles for herself, in hopes of being feared by juveniles and protecting the weak. Hearing from a police officer that high schoolers have been bullying people in the Central Shopping District, Chie and the protagonist coincidentally help. They first save Chie's middle school friend, who then calls the police. The second time, Chie makes the hoodlums run off just as they attempt to steal from a little boy. Once this occurs, the protagonist has the option of making an intimate relationship with Chie. Depending on what the protagonist does, Chie will either go to train with him (platonic relationship) or go to his home (romantic relationship) and give him matching wristbands. Chie's resolve to help others and protect the team, especially the protagonist, transfigures Tomoe to Suzuka Gongen.
Much like with most of the other girls, should the protagonist choose to establish a lovers relationship with Chie and accept her invitation on December 24, he shares a cake he bought with Chie while she gives him an accessory, the Fluffy Muffler. She promises to make one with her own hands for the following Christmas. Chie will also ask the protagonist whether can she stay in for the night, telling him that she lied to her parents about instead staying at Yukiko's house. This option is only available if the killer is defeated by December 22.
In the Social Link for the Chariot, the protagonist learns how Chie and Yukiko first became friends, regarding her taking care of Muku, the dog Yukiko found but the Amagis forbade her to keep many years ago. At the end of the Normal ending, her desire to protect Yukiko and later the town from the mysterious serial killer prompted her decision to become a police officer under Detective Dojima's guidance.
Tomoe and Suzuka Gongen learn mostly physical abilities and some weak ice spells. Later in the game, she stops learning more advanced ice spells because Teddie will take over as the main ice user of the team. Should the protagonist reach Lv 3 of the Chariot Arcana, Chie will learn her distinctive follow-up attack Galactic Punt, which she performs a kick which instantly kills normal enemies, downed or otherwise, provided the Protagonist struck down a target first.