Checking In! (слэш)

Shen Qingqiu wishes dearly that the System would leave him alone. Unfortunately, the System does not care what he wants.
The latest quest finds him waking up next to younger versions of him and his husband; the same people they interacted with eight months prior during a time travel incident. The young couple may well surprise him...
(A requested non-canon extra for Don't You Know (That I'm Yours)!)