BTS - The Eighth Member

Hana and BTS

Jin
Jin mothers Hana as much as he mothers the rest, he always takes special consideration to preserve her feelings. Hana notices how much he puts the rest of the band above himself and so ensures he has a shoulder to lean on in her if he needs it.
Jin and Hana cook a lot together, since she joined the group when she was so young, Jin taught her everything she knows about the stove. He even taught her some classic Korean dishes that she'd never gotten the chance to cook before.
Probably the most wholesome relationship she has out of all the guys, the two barely ever argue and when they do, it's more of a telling off than a fight. And it always ends with an apology and a heartwarming hug.

Yoongi
Fans joke that Hana learned her badassness from none other than Yoongi. There have been so many edits of the two side by side where their stone cold faces are identical.
Yoongi projects a tough exterior but with Hana he has a soft spot. There has been speculation that the two have worked together on the majority of BTS' music and big hits but neither have commented on the rumours.
Hana goes straight to Yoongi when she needs to voice a concern or worry, knowing that he'll listen without interrupting, before offering his advice. Although they all address Hana as Kid or Kiddo, Yoongi does so the most.

Hoseok
Hana is often seen as the sunshine of the group, never failing to brighten Army's day or make the other members laugh. As a result anytime she spends with Hoseok is a happiness overload.
The two are very similar that way, in that they keep their hardships and feelings behind closed doors. The only thing they project towards Army is happiness and well-being.
As Hana struggles the most with dancing it wouldn't be uncommon to catch the two of them after hours practicing late at the studio, with Hobi's help she's well on her way to becoming a pro dancer.
Especially when dancing, skinship is a big thing between this pair.

Namjoon
As the leader of the group, Namjoon finds himself being hard on Hana, keeping the Maknae in line.
Of course she notices this and with the help of the younger ones they often pull pranks on their senior.
Although they keep it very professional in the spotlight, the two can be caught playing board games late at night or swapping theories on the latest books they've read.
Namjoon appreciates that Hana always takes the blame if his clumsiness takes over and he breaks something.
These two fight the most in the group, but they eventually make up, usually with Joon feeling so bad that he buys her a 'I'm sorry," gift and she has no choice but to forgive him.

Jimin
Jimin, although not much older than Hana, feels the most responsibility in protecting her. She reminds him so much of his younger sister and does what he can to keep her happy.
Hana recognises the burden she is on him, so keeps her negative emotions far from his grasp.
The two have been caught on numerous occasions, grabbing hands to get through busy crowds, or Jimin's hand pressed on the small of her back, just so he could grab her if something went wrong.
Things like this have sparked many dating rumours but the two keep it strictly platonic.
Jimin is the only one who calls her H.

Taehyung
Taehyung and Hana mess around the most from the entire group. Often caught goofing off or laughing uncontrollably at something that's not even that funny.
They are the biggest movie geeks from them all and can be seen late into the night staying up to watch films in their downtime. A lot of the time this ends up with the two falling asleep in front of the TV, only to be rudely awoken by another member the next day.
Tae is probably the closest to Hana and a lot of the fans see it, there is a 50/50 split between Army whether or not they are together or just friends.

Jungkook
The youngest boy and the youngest girl of the group get on incredibly well. Although their relationship was strained at the beginning of their friendship because of dating rumours due to their close age, they just laugh it off now.
Jungkook is the only one who knows about her nightmares, his room being just across the hall from hers. He promised he'd keep it a secret as per Hana's request but he'll often stay up until after she's gone to bed to make sure she gets to sleep okay.
Besides Jimin, Jungkook would be most cautious of her when in public, throwing eyes at anyone who looks at her funny and making sure she isn't far from at least one of the members at all times.
Jungkook started the fan name BigHit's Belle