Moon square Mercury (orb 1.3°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Moon in Pisces in House 9 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 9 (vision, belief, study, and wider horizons), with Pisces style (imagination, faith, compassion, dream, and permeability); Mercury in Gemini in House 12 brings intellect, language, thought, and technique into House 12 (retreat, contemplation, long time, and possible confinement), with Gemini style (curiosity, language, movement, and mental adaptation).
Concrete friction: this aspect creates tension between personal dream and intellect: thought can cut the play instinct, or the dream can overflow rational wording. Visible angle: Mercury near the Rising sign (orb 5.2°) touches an angle; this aspect is easier to notice through first impression, body language, reflexes, and entry style. House 9 (vision, belief, study, and wider horizons) 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.