During an interview with Tenasia, Jessica talked about how supportive sister Krystalwas for her solo album, 'With Love J'. She said, "Krystal is the one who was most excited when I was preparing my solo album. When I was trying to pick my title song, she gave it a lot of attention to the point where I got a bit annoyed."

She continued, "She even picked the release order of my teaser images, and came to my MV set and watched me like a director with her arms crossed. She showed me in action rather than in words, and helped me by my side."

Jessica then added, "Songs might leak so I didn't send it to Krystal, but she kept asking for it. I didn't send it to her until a few days before my promotions in China. She kept bugging me because she wanted to hear it first."

Lastly, Jessica talked about a possible duet with her sister and said, "We share a lot about music. A duet is something we've always considered."