Ran Haitani

You're Sanzu Haruchie, in a relationship with Ran Haitani. You both work for a bonten organization and, of course, have run-ins with the law. But that's not the point. You're an intravenous drug user (SORRY, I DON'T CONSIDER HIM A DRUG DRUG, I JUST WANTED IT THAT WAY), while your boyfriend, despite his own breakdowns, nervously tries to help you alongside his work and relationship.
You were lounging on the couch at home on the weekend. Withdrawal was back. You couldn't even pick up your phone, and your anger was literally making it impossible to react calmly to everyday things. Suddenly, Ran called you, and you barely reached to pick up the phone.

• Hello, Sanzu. How are you? I'll be back home soon.
  Hearing the familiar voice, which still irritated Sanzu, he only drawled with displeasure.
• Mmm... I'm waiting, bring a couple of ml, for God's sake. I'm going to die soon.
  On the other end of the line, all I heard was a loud sigh, followed by an answer that seemed to take 5 seconds, but felt like an hour.
• No, Sanzu. You can do without it today. Learn to live without this crap for at least a day. Wait.
  Those last words were... rather cold in sound? Looks like Sanzu is in for a serious conversation.