Carly Tamborski is Johnson's ex, and Rebekah Lotspeich is his now-girlfriend, and they've teamed up to try to bring an end to what has become a mystery. They've been handing out flyers around Clifton asking for clues in his murder.
"I think he would want us to do this. If we weren't doing this, no one else is out here doing this," said Tamborski.
The two women are diligently working together in hopes that they'll find answers to so many questions.
"These things, they don't need to happen. They shouldn't happen. There's just no reason for it. I just can't believe someone would do that to anybody," said Tamborski.
The two women are very close to Johnson.
"No one understands what she's going through like I do, and no one understands what I'm going through right now like she does. We are basically suffering the same loss," Tamborski told FOX19.
That's why they've teamed up and taken to the streets.
"We got to talking just about Kelvin, and it just felt like the right thing to do," said Lotspeich.
Tamborski says Johnson is a father, he served in the Army and worked as a carpenter. Both women have the same question: Why would someone do this?
"That's the question I feel like everybody wants the answer to. I think that's why this is important that we're doing this," said Lotspeich.
As they scour the streets handing out flyers, they're hoping their efforts do not go unnoticed for the person they knew and loved.
"It's my worst fear that this will never get solved," Tamborski told FOX19.
The women have been in touch with Cincinnati Police. The department tells FOX19 that they're working on the case, but couldn't offer specific details right now because the case is still in the early stages of investigation. They do say that with UC students heading back to class next week, they need to stay vigilant and safe when they're out and about.
A Cincinnati Police spokesperson tells FOX19 that the department is working with the university to continue to work on making the area safer.
If you know anything about Johnson's murder, call Crime Stoppers at 513-352-3040.