Sōta Mochizuki, a third-year high school student and film club vice-president nicknamed “Mochita,” balances a straightforward, earnest nature with bouts of jealousy and a playfully immature streak, earning him gentle ribbing from classmates. His 165 cm frame, September 3 birthday (Virgo), and blood type B complete his profile.  
Since the school opening ceremony, he has nurtured a quiet affection for Akari Hayasaka, the art club president, though self-doubt and fear of rejection trap him in cycles of hesitation. Witnessing Koyuki Ayase’s candid pursuit of another classmate sparks introspection, amplifying his internal struggles.  
A turning point arrives when Koyuki, attuned to Sōta’s unspoken feelings, nudges him toward courage. Spurred by her support, he confesses to Akari after school. Met with tentative acceptance, their shared visit to a pastry shop cements their fledgling relationship, charting Sōta’s evolution from anxious indecision to heartfelt vulnerability.  
His bond with peers—especially Koyuki—reflects a network of encouragement where mutual nudges spark growth. While his romantic arc culminates in reciprocated feelings, his interactions broader underscore the delicate dance of youth: balancing unspoken yearnings, fragile pride, and the quiet bravery required to bridge them.