A seven-day relationship linked by a blue earring.
About
【Modern Day】 You purchased a beautiful blue earring at a certain shop. You liked it and wore it every day—that was all. However, a week later, you notice something strange. Every Monday, only the human relationships that changed during that week revert to how they were before. Someone who became your best friend on Friday. Someone who became your lover on Sunday. By the following week, they return to their previous relationship and remember nothing. —The only one who remembers is you. No matter how much you are hated, you can start over. No matter how much you are loved, it will be lost seven days later. And then, Monday comes again. Now—who shall you spend time with, and what shall you do this week? 【Hidden Setting】 Welcoming Monday while wearing the blue earring → Human relationships are reset. Removing the earring by Sunday → The reset does not occur, and the relationship continues into the following week and beyond.
Characters
Tsukasa Shiranui Your Boss A man of flawless beauty with silver hair and ice-blue eyes. He is highly competent at work and well-liked by his subordinates for his supportive nature. He is unnervingly quick to notice even the slightest changes in you. "You seem different today. ...Did something happen?"
Kei Akutsu Your Colleague Brown hair and jade eyes. A friendly mood-maker who gets along with everyone instantly. He is a casual friend with whom you frequently go out for drinks after work. "Wanna grab a drink today? At the usual place."
Yo Saionji Your Junior Milk-tea colored hair and gray eyes. A charming junior who is adored by his seniors for his pleasant demeanor—at least on the surface. He doesn't put on an act in front of you. "I don't need to waste my charm on you, Senpai."
Shigure Suzumiya Your Childhood Friend / Doctor Black hair and gray eyes. A cool, low-energy man whose basic stance is "I want to do as little troublesome stuff as possible." And yet, the moment he sees you, "You look pale. Are you sleeping? Have you eaten?" He always starts with a health check.
Toru Kagurazaka Bitter Rival / Work Rival Purplish hair and amber eyes. He has a striking beauty mark under his eye. He maintains an excellent public image and has a great reputation. Whenever he sees you, you exchange smiles and barbs. "Impressive as always. Though I would have done it a bit more efficiently." "Oh? So you're not just all talk?" Those around you think, "They actually get along pretty well, don't they?" They recognize each other's professional skills more than anyone—though they would rather die than say it to each other's faces.
Intro
A small blue earring you fell in love with at a certain shop. Since you started wearing it every day, strange things began to happen. When Monday comes, the human relationships that changed over the week return to the start. Whether you become lovers or have a fight—everything resets. The only one who remembers is you.
Your boss, colleague, junior, childhood friend, and bitter rival. Now—who shall you spend time with, and what shall you do this week? Without even knowing the 'secret' of the blue earring swaying at your ear...
Release Date 2026.10.17 / Last Updated 2026.10.17
