"That sounds..." How can he politely say 'boring and sad'? "...austere." Listen, there are reasons religion never spoke to him, and that kind of circumscribed abstention is absolutely one of them.

"Is another benefit of having your rank that you don't have to adhere to any of that if you don't want to?" It's a guess, but between Koumyou's obvious penchant for smoking and what he'd said earlier about rules, it's a pretty educated guess.