Namjoon was taller than he thought. Just as a leader would, he was mature and was very thoughtful. When other members spoke, if he felt there would be a misunderstanding (on Kim's end), he would elaborate to clarify and really made the mood of the interview good.
Seokjin didn't talk much in the interview but he provided a lot of good reaction and responded when asked but overall did not speak as much so Kim wondered if he was reserved. But Kim says Seokjin's gaze was really intense. Seokjin sat directly across from him,
Once again, Yoongi spoke so much more than he thought and spoke passionately about music. Kim asked a wide variety of questions to Yoongi. He specifically things that come out in Yoongi's rap/mixtape, such as his him proving himself or his words against haters,
Kim once posted last an abbreviated version of "why is suga good at singing?" (which kind of went viral). He heard "HER" and heard an unfamiliar vocal, then after researching he realized it was Yoongi.
Through reviewing Hoseok's mixtape, Hoseok was a member he grew much interest in. He really likes his positive feelings. And when they met, Hoseok was the one who greeted him most warmly and happily. Hoseok also told him he had read Kim's review for his mixtape.
Kim says Jimin was very shy - though he believes he himself may have not been an "easy" presence to be in front of as a music critic, etc. Jimin listened throughout most of it and sat there shyly hehe. But there was something Jimin said that really left an impression.
Around the time when Tear came out, Singularity have been revealed it. Kim personally really liked and in terms of musicality, left such a deep impression on him. He wanted to make sure to tell Taehyung if he ever met him so he felt glad to have the opportunity:
Kim in the past had talked about Jungkook's vocals separately when he covered Roy Kim. At that time he said he thought Jungkook would sound nice if he sang Michael Jackson's "She's out of my life". Kim had complimented Jungkook's vocals, colour, emotions,
Something else that left an impression on Kim that Yoongi said. Many people look at the external things - who composed what, who sang how much.