Translation by nag2n on Twitter. Original translation post can be found here. Translated from this thread.
Q. Did Kyouji choose his perfume and watch himself?
A. He received the watch from a woman and chose the perfume himself.
Q. What's up with Kyouji's dad?
A. He works at a factory and is uninterested in his children.
Q. Has Kyouji ever shot anyone with a gun?
A. He has not.
Q. Was Kyouji keeping tabs on Satomi during the 4 months he was ghosting him?
A. No, he ghosted Satomi in order to distance himself from him.
Q. Will Satomi ever get his license and give Kyouji a ride?
A. Someday, definitely.
Q. Satomi has a habit of touching his lips or nose; are either Satomi or Kyouji aware of it?
A. Satomi doesn't particularly notice. Kyouji doesn't either.
Q. Does Satomi still sing after everything's that's happened?
A. Not really. He doesn't really think about wanting to go to karaoke either.
Q. How much older/younger have Kyouji/Satomi dated before?
A. Kyouji has dated 15 years older and hasn't dated much younger. Satomi's yet to date anyone.
Q. In a recent Q&A, it was revealed that Satomi lives off of 500 yen per day for his food expenses. What kinds of foods does he eat?
A. He rarely eats at the cafeteria, he usually has instant ramen or half-price melon bread (110 yen).
Q. Is it just a coincidence that the snack bar Kyouji manages is also in the same Kamata where Satomi lives? Or is it because of Satomi that Kyouji's managing a place there?
A. Satomi was a coincidence; the business had already been around for a couple years.
Q. Will there ever come a day where Kyouji doesn't just buy Satomi food, but makes some for him?
A. Probably not.
Q. At the end of Fa!'s first volume, when Satomi said that they should stop meeting up, Kyouji immediately replied "I understand." How did Satomi feel?
A. He was shocked.
Q. At what part?
A. He thought Kyouji would cling to him... (instead he answered immediately)
Q. What are Kyouji/Satomi like when dating? For example, if they're the type to become cute and affectionate...
A. Satomi is the pursuer, Kyouji is the pursued (popular).
Q. Did Kyouji have a sense of what kind of present Satomi wanted to give him?
A. Only vaguely...
Q. Is Kyouji the type who's good at recognizing when others view him favorably?
A. Yes.
Q. Is Satomi's ideal type still Ayami Nakajou?
A. Yes, but she got married...
Q. Oh, was he disappointed?
A. A little, haha.
Q. Why does Kyouji always drink hot coffee?
A. To wake up (because he's sleepy...?)
Q. Do Kyouji/Satomi have dreams in which the other appears?
A. Satomi often does; Kyouji doesn't dream much to begin with.
Q. Does Kyouji only use stamps (stickers/emojis/etc) with Satomi?
A. He sometimes uses them with women so as not to scare them, but Satomi is the only man he uses them with.
Q. What was Kyouji's first impression of Satomi?
A. "He's good looking~" "He's good at singing~"
Q. Do Satomi and Kyouji celebrate each other's birthdays?
A. Kyouji knows Satomi's birthday but since Satomi doesn't know his... I don't think he'd have celebrated it.
Q. What animals would Satomi and Kyouji be?
A. Satomi would be a cat and Kyouji a honey badger.
Q. What kind of drinker is Satomi? What happens if Kyouji has alcohol?
A. Satomi doesn't drink due to being underage, but if he did he'd probably be a heavyweight. Kyouji can't handle a single drop.
Q. Satomi's room is clean, but he's not diligent about folding his clothes. Is it because he's stressed?
A. To be honest, it's because Satomi isn't particularly good at housework.
Q. Does Satomi use perfume? What does he smell like?
A. He doesn't use perfume. I think he'd have a clean, soapy scent.
Q. Did Satomi buy his clothes?
A. Half of them he bought, the other half are hand-me-downs from his brother.
Q. How many points does Kyouji score when he sings at karaoke?
A. Around 70.
Q. How old was Kyouji when he got his first suit? Did someone else buy it for him?
A. Around 27-28, as a present from the boss.
Q. If Kyouji asked Satomi to get a small tattoo of his name or initials, would he?
A. He would not.
Q. Do Kyouji or Satomi have piercings? If so, where?
A. Kyouji has cartilage piercings.
Q. Has Kyouji ever slept with a man?
A. He hasn't, but I don't think there's anything he can't do.
Q. Does Kyouji regret becoming yakuza?
A. He regrets it, but it's not something he can undo either.
Q. Was it something he regretted even before meeting Satomi?
A. Yes, because he's unable to see his nieces and nephews as a result.
Q. Does Kyouji get along with his family?
A. So-so, they don't contact him. They haven't completely cut ties, but he only goes back home to visit every 3-4 years.
Q. What kind of work is the Matsuribayashi involved with?
A. Various bad things.
Q. If Kyouji and Satomi like baseball, what team do they support? If neither do, what other sports do they like watching?
A. Kyouji would probably be a Hanshin Tigers fan, Satomi has no interest in sports.
Q. What's the age difference between Kyouji, Kyouichi, and Kyouko?
A. By the time Kyouji was born, Kyouichi was 12 and Kyouko was 9.
Q. What do Kyouji and Satomi think are each other's charm point?
A. Kyouji: Satomi's gentleness
Satomi: Does he have any......? (lol) He likes to buy him food?
Q. If Satomi hadn't met Kyouji, would he have dated anyone?
A. Satomi wouldn't choose to date or not date anyone because of Kyouji in particular.
Q. If Kyouji had gone to college, what would he have majored in?
A. Probably in the liberal arts department, a literature major?
Q. When did Kyouji start smoking and how much does he smoke?
A. A pack a day since becoming an adult.
Q. If Satomi and Kyouji were to cry in the future, what would be the reason?
A. I don't think Kyouji will cry, and Satomi would cry if Kyouji died.
Q. Does Kyouji dye his hair?
A. It seems like he'd do it often.