Thirty Days with My First Love Sister

A Month of Sweet Memories with Thirty Days with My First Love Sister

Thirty Days with My First Love Sister invites players into a heartwarming interactive romance on PC. In this fully video-based game, a childhood friend and promised elder sister returns from abroad, creating a unique opportunity to build affection over thirty days. Between playful outings and intimate evenings, the story revolves around choices that will shape the relationship.

Explore Diverse Locations and Heartfelt Moments

With ten main scenes and over 30 sub-locations, players can select their adventures ranging from an amusement park to a cozy restaurant. Each locale offers a fresh backdrop for romantic interactions, filled with AI-generated video scenes. Players are challenged to create memorable moments while managing core stats like money, affection, stamina, and intellect. Every choice impacts the path ahead, leading to different branches in this romantic journey.

Dynamic Affection System for Realistic Relationships

A standout feature is the affection system, where every day spent with your sister alters your statistics. Engaging in activities together helps unlock deeper levels of intimacy, from late-night gaming sessions to whispered secrets. Competing through various scenarios, players navigate not only light-hearted romance but also emotional depth, as affection grows with each passing day.

A Narrative with branching Endings

The game offers four major endings—friendship, romantic love, marriage, and a hidden secret path. This allows players to forge a personalized narrative through multi-playthrough exploration. The story arcs intelligently intertwine experiences, such as a wedding dress fitting leading to a poignant Ferris wheel confession, showing how choices create interconnected tales.

Key Moments That Shape Your Story

Unforgettable experiences punctuate the gameplay, featuring 12 one-time key moments like a thrilling Ferris wheel kiss or a tender first hand-hold. Each key encounter appears only once per playthrough, enhancing the sense of uniqueness in every player's journey. The anti-repeat and fallback mechanism ensures the gameplay remains varied, protecting these cherished interactions.

Unlock Costumes and Enhance Your Playthrough

A costume unlock system allows players to personalize the experience. By purchasing outfits such as gym gear or wedding attire, new scenes and storylines become available, adding layers to the narrative. This mechanic not only enhances engagement but also encourages players to explore different avenues in their relationships throughout the month.

Seamless Progression and Cloud Saves

Thirty Days with My First Love Sister is designed with Steam Cloud saves, allowing players to sync their progress across devices effortlessly. This ensures that whether at home or on the go, the romantic journey continues without interruption. With a variety of hidden easter eggs and starting bonuses from subsequent playthroughs, there's always a reason to revisit this touching story of love and affection.