Blue Blood Love Song

A multi-ending visual novel blending romance, sci-fi, and mystery. A perfect reunion gradually gives way to unsettling inconsistencies. As your relationship with him deepens, you must choose between trust and doubt—and every decision may change your bond and the ending that awaits you.

Developed by HouKkin · Published by HouKkin

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From the Devs

Fall for him. Doubt everything.

A tender day begins beside your childhood friend, Zuoluo.

An amusement park, cake, blue roses, and fireworks—the reunion feels almost too perfect. Yet among those familiar and tender moments, small inconsistencies begin to surface.

The closer you get to him, the harder those contradictions become to ignore. Zuoluo remains as gentle as ever, but he seems to be hiding something—and the seemingly ordinary world around you is beginning to crack.

What is real? What is a lie? Most importantly—who will you trust?

Your choices shape the story

Your decisions change relationships and lead the story down different paths. Trust, doubt, confront, or escape. Every choice may bring you closer to the truth—or take it away forever.

Features

A romantic science-fiction mystery visual novel
A complete story told across 24 chapters
Story-changing choices and an affection system
13 endings, including bad, normal, and true endings
A story tree for revisiting unlocked chapters and endings
Text support for Simplified Chinese, English, and Japanese

Fall for him. Doubt everything. Choose your ending.

Back of the Box

Platforms	Windows, macOS
Age ratings	ClassInd (Brazil) 14 — Violência Atos criminosos IGRS (Indonesia) 18 — Kekerasan Steam (Germany) 16 — Drastische Gewalt
Controller required	No
Demo	View demo on Steam
DLC / extras	1 listed on Steam
AI disclosure	Generative AI tools were used during development to assist with the creation and refinement of some visual assets, localized text, music, and a small number of sound effects. All AI-assisted content was reviewed, selected, and edited by the developer before being included in the game. The game does not use live generative AI and does not generate content during gameplay.
AI disclosure categories	2D Images Localization Music Sound Effects