|Family|| Shin Kashiwagi (father)|
Chitose Kashiwagi (mother)
Yuuma Mukai (older brother)
Ataru Kashiwagi (second brother)
|Occupation||3rd Years Middle School Student|
|First Apperance||Chapter 1|
"I didn't cry at the funeral... Because I knew you were doing your best to act as Ataru onii-chan, For me. There really wasn't any difference... I cared about you just as much... I love you... a lot. Take care of me after this too, okay, Onii-chan?"
– Yuri Kashiwagi replies to Ataru Kashiwagi, Chapter 8
Yuri looks almost identical to Koyori Kanda. She has shoulder length hair.
Chapter 1-10 (First Season)
Yuri first appeared in Chapter 1, waiting for her brother, Ataru Kashiwagi, back to the home so they will having launch in their house. During the launch, Yuri said that Ataru don't have any friends, but Ataru deny it to said he indeed have a friends and he will bring his friends to their house next house (Though it's just a lie). When Ataru's smartphone is brightly, Yuri wonder what's happen and Ataru was sent into the Real Account world.
After Ataru was transferred into the Real Account world, Yuri try to contact him and asking what's happened. Soon, when True Follower Diagnosis was begin, Ataru was telling Yuri to unfollow him but she doesn't want because they're family, though soon Ataru block her account in order to have her to be survive. After Yuri's account was blocked, she contact him again and ask why is he blocked her account. A several hours later, Marble comes to the house and attacked Yuri. After Yuri is awake, she heard her smartphone was ringing and Ataru's body was lost. When Ataru asking what's wrong with Yuri, she said it's nothing because she don't want to let him know his body was steal by Marble. Then, Yuri asking that was Ataru meet a girl who look similar to her and he said yes while saying Koyori Kanda is cute. After hearing Ataru's thoughts on Koyori, Yuri state that Ataru may be gonna sent into the jail soon. Then, Ataru gives his phone to Koyori so she can have a talk with Yuri, Yuri respond that if he do anything bad to Koyori then tells her so she can calling the polices to catch him. Yuri said that Ataru is a naive person and said Koyori need to take care of him. After the conversion is finished, Yuri went to outside to finding Ataru's body.
Later, after Ataru revealed the truth that he is not Ataru but Yuuma and he disgust as Ataru because he wanted to take his older brother's position, Yuri unfollowed him. Shortly afterward, Yuri contact Ataru and said that she already know that he is Yuuma and stated she like both of them so much. Then, Yuri re-follow Ataru once again for and said she hope Ataru can take care of her again in the future. Ataru tell Yuri that he hope she still calling him "Ataru" until the whole incident is finished so she can refer him as Yuuma as she like, and she agreed it.
Chapter 71- (Third Season)
Yuri appeared in Chapter 81, throw her smartphone and join the "No Smartphone Club". Yuri make a cameo appearance in Chapter 111 and Chapter 176 along with other "No Smartphone Club" members.
- In a 4-koma one shot, Yuri try to changed her hair color to pink. As a result, Ataru was so surprised and scared because he think Yuri become a bad girl. Soon, Yuri has no choice but changed her color back to black and stated that Ataru was worrying too much.
- When Yuri returns in Chapter 81, she showed to be sad and about to cry when she joins the "No Smartphone Club". This may be caused of Ataru killed Koyori during the second part of the story.