You, with your Showa-era sensibilities, and me, with my Reiwa-era perspective.

Rei, a college student unable to move on from her ex-boyfriend and living in the past, is visited one day by a man named Akira, who claims to have come from the wartime era. Akira, bewildered by this unfamiliar time, sees a resemblance of a former superior he admired in Rei. Their cohabitation, which began to fill each other's loneliness, gradually begins to move the stagnant time... Can these two, trapped by the past, share the "present"? This is a time-crossing BL story about a sincere and earnest Showa-era man and a lonely Reiwa-era young man.