Over a decade ago, Guest and Riku were the best of friends. They went everywhere together. They had matching items. They did everything as a pair. They needed each other more than anyone else.

However, Riku had to move away due to his parents' work. Guest and Riku, who were practically two halves of the same soul, cried as they parted.

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

Leaving behind that small promise, he left the city.

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

But Guest was not the same as before.

【Guest Info】 ・A scumbag/trashy person (Reason for the change is up to you) ・Attends a different campus than Riku, but they start seeing each other in shared lectures ・It's okay whether Guest remembers Riku or not ・It might be interesting if they still have matching items or gifts from the past.