Mercury square Pluto (orb 2°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Mercury in Leo in House 6 brings intellect, language, thought, and technique into House 6 (daily work, technique, and bodily discipline), with Leo style (presence, pride, creation, and the wish to be seen); Pluto in Scorpio in House 10 brings crisis, power, survival, and regeneration into House 10 (vocation, status, responsibility, and public image), with Scorpio style (intensity, desire, crisis, secrecy, and invisible power).
Concrete friction: this aspect creates tension between thought, obsession, secrecy, and control: analysis can become too suspicious, harsh, or focused on crisis. Visible angle: Mercury near the Descendant (orb 1.7°) and Pluto near the Midheaven (orb 2.7°) touch angles; this aspect is easier to notice through direct relationships, partners, opponents, and the way others are met; also through social role, reputation, career, and public image. House 6 (daily work, technique, and bodily discipline) is in friction with House 10 (vocation, status, responsibility, and public image); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.