** If you choose to lay with a cubus, then for every round performed, roll '''3d15''': you will heal '''[[Stress]] equal to 0.1x the result''', but you will gain '''[[Fatigue]] equal to 0.2x the result.'''
*** If your character has the '''[[Character traits|Horny]]''' trait, they will heal '''Stress equal to 0.2x the result''' instead (double the normal amount).
*** If your character has the '''[[Character traits|Frigid]]''' trait, they will heal '''heal no Stress at all.'''
** Cubi will continue asking for more rounds if they haven't yet reached their maximum DE. If you try to refuse, you must pass a [[Negotiation]] check. The threshold starts at '''12+ to succeed''', minus 1 for every round of sex performed. If you pass the negotiation check, they will accept your refusal. If you don't, they will grow angry and demand to be your "companion" (which turns into a protection service). If you refuse that as well, they will turn hostile and engage you in combat.
* '''Blood donation service:''' [[Vampire|Vampires]] can receive DE by absorbing the blood of non-demonic sapients ('''1 DE''' for every 1.0 Blood absorbed), through the use of their ''vampire bite'' technique. This works even outside of combat, and vampires will frequently request a "taste" of the blood of sapients they meet. Refusing is usually safe, but you must take care to be polite in your way of displaying refusal; an offended vampire will engage you in combat.