Mars square Pluto (orb 3.9°) creates concrete friction between the two planets. The orb is moderate; it stays secondary beside tighter signatures.
Here, Mars in Leo in House 10 brings action, courage, competition, and effort into House 10 (vocation, status, responsibility, and public image), with Leo style (presence, pride, creation, and the wish to be seen); Pluto in Scorpio in House 12 brings crisis, power, survival, and regeneration into House 12 (retreat, contemplation, long time, and possible confinement), with Scorpio style (intensity, desire, crisis, secrecy, and invisible power).
Concrete friction: this aspect creates friction between Mars (action, courage, competition, and effort) and Pluto's crisis instinct: pressure can become domination, fear, or destructive escalation unless it receives a clear outlet. Visible angle: Mars near the Midheaven (orb 4.3°) touches an angle; this aspect is easier to notice through social role, reputation, career, and public image. House 10 (vocation, status, responsibility, and public image) is in friction with House 12 (retreat, contemplation, long time, and possible confinement); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.