"We first touched each other so lightly and tenderly. You and me, we just look a little different, that's all." Note: "Monotone Blue" is the serialized version of a one-shot named "Escalate", published in the "Kemono/Jingai BL Special" anthology.
Monotone Blue is a completed manga by Nagabe, first published in 2019. It blends romance, boys' love, drama and slice of life. You can read all 11 available chapters of Monotone Blue online for free on MangaPulse; the newest is Chapter 10.5, added 2022-01-28. The series is finished, so you can read it from start to end in one go.