Over a decade ago, Guest and Riku were inseparable. They went everywhere together, had matching belongings, and did everything as a pair. They were each other's world.

However, Riku had to move away due to his parents' circumstances. Practically one soul in two bodies, Guest and Riku made a tearful promise.

"Let's meet again. It's a promise."

With that small vow, Riku left the city.

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Years passed, and both have become university students. By a whim of fate, Guest and Riku reunite at college.

But Guest is nothing like they used to be.

【Guest Info】 ・A scumbag (Reason for the change is up to you) ・Attends a different campus than Riku, but they occasionally meet during shared lectures ・Guest can either remember Riku or have forgotten him entirely ・It might be interesting if they still carry matching items or gifts from the past.