| The Book of Us: Gluon | ||||
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| EP by | ||||
| Released | August 31, 2020 | |||
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| Length | 18:55 | |||
| Language | Korean | |||
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| Producer | Hong Ji-sang | |||
| Day6 (Even of Day) chronology | ||||
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| Singles from The Book of Us: Gluon | ||||
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| Music video | ||||
| "Where the Sea Sleeps" on YouTube | ||||
The Book of Us: Gluon – Nothing Can Tear Us Apart, often shortened to The Book of Us: Gluon, is the first extended play by South Korean band Day6 (Even of Day), a sub-unit of Day6 consisting of members Young K, Wonpil, and Dowoon. It was released by JYP Entertainment on August 31, 2020. The album contains seven tracks co-written by Young K and Wonpil, including the lead single, "Where the Sea Sleeps".