The investigative loop here is deeply mediocre, to the point where we felt like we were sleep-walking through each day's events. And the Switch version is riddled with errors: our "time played" counter never activated, there were typos galore, and there were moments where we could see code in the text boxes instead of the actual text.
In spite of all that? We're suckers for this sort of story. A close-knit group of friends who drifted apart over the years reunite after our meddling protagonist arrives, poking and prodding to find his mysterious pen pal: said friends must do whatever they can to stonewall this person, but find their secrets unwound one by one. It's emotionally cathartic and often funny, especially if you're playing with the over-the-top live-action sprites turned on.
Root Letter: Last Answer was endearing enough that we saw it through to the end, playing through all five routes. We just wish this story was wrapped around a better game.