In particular, Harrison, a 6-foot-2, 192-pound safety from Tallahassee (Fla.) Florida State University School, hung out with early enrollee and fellow defensive back M.J. Stewart.
"It was fun," Harrison said. "We just chilled and talked about all different kinds of stuff. And we hung out with other players. And he just showed me around the campus – showed me the ropes, basically."
After two days on campus, Harrison says he feels he fits in with the UNC players.
Harrison was part of a quartet of Floridians in Chapel Hill on Saturday. Ben Edwards, Andre Smith, and William Sweet were the other three. Like Harrison, Smith has been committed to UNC for quite some time. Sweet joined Harrison and Smith on the Tar Heels' commitment list with a pledge on Saturday.
"I had known for like two months in advance, but I just didn't tell anybody because he wanted it to be a surprise," Harrison said.
"Basically, I recruited him. I saw that he was considering North Carolina, so I started talking to him on Twitter. And he was asking me about why I committed and I was just telling him."
Among the foursome, Edwards is the outlier. Edwards is verbally committed to Ohio State, though he's still considering the Tar Heels. Harrison says he's been recruiting him also.
"I think he had fun on the visit," Harrison said. "We'll see what happens."
Harrison first visited UNC last summer. He then was back on campus for the Tar Heels' season finale against Duke.
This past Saturday afternoon, Harrison received a sneak peak at UNC's 2014 defense while watching the spring game.
"We definitely have a chance to be great this year, especially on defense," Harrison said. "We did really well on defense."
Depending on how he develops, Harrison could end up playing anywhere within UNC's secondary. The UNC coaches have informed him that depth will likely dictate him playing one of the two high safety positions (strong or free).
"Coach [Dan] Disch said it would probably be free safety," Harrison said. "It definitely wouldn't be the Ram position, because they have a lot of people at that position. But [I'll play] probably one of the other two safety positions.
"I like it. I just want to get on the field as early as possible so I can contribute."
Speaking of Disch, he was the coach that Harrison spent the most time with this past weekend.
"Him and I connect," Harrison said. "We talk two or three times every week. We've known each other for a year now, because he offered me about this time last year."
Although he considers himself a solid commitment, Harrison has visited Florida, Florida State, and LSU the last few months.
"I'm still 100-percent committed," Harrison said. "I'm just going around and just looking around -- nothing serious."
Harrison says he doesn't have any forthcoming visits to other schools, though he hasn't ruled out the possibility of more. He does plans to return to UNC for Fedora's Freak Show in June.