Melancholic

Low extraversion and high reactivity: you prefer people in small doses, and feelings arrive quickly, land hard and take their time leaving. Of the four corners this one gets the worst press — usually written up as a list of faults — so let's be direct: it isn't a broken version of the others. A strong response has consequences, and half of them are useful. You notice what others miss: the shift in tone, the awkward pause, the fact that someone is not fine despite saying «I'm fine». You do work carefully because it genuinely matters to you how it turns out. And your attachments aren't deep as a figure of speech: few close people, but actually close. The cost is real too. What stung stays longer than it should, and mentally re-running a conversation from three days ago doesn't end on its own. And tiredness from people arrives before you notice it and leave. Neither of those is fixed by «character» — they're fixed by scheduling: recovery time that belongs to you, and permission to leave early. If the heaviness lasts for weeks and stops tracking events, that isn't temperament any more, and it's worth saying out loud to a qualified professional — the good news being that it's the most solvable part of all this.