Responses
In chapter 201, Cassie mentioned that 2023 was the following year, which means chapter 5 took place in 2022. And now we're in 2026, which means Garam is 26 and Heejae is 48.
It just hit me that the time skip (December 2022–November 2026) is longer than their entire time together (March 2019–December 2022). It's also longer than Valter's hiatus, which lasted three years.

we know that garam born in 2000 and jae in ‘78 but do we know which year they are in currently after this four year time-skip? i calculated myself that they had been together for six years, including the college arc ofc, and in this time-skip garam should exactly 30 and jae 52 but i can’t tell if i guessed right or wrong