Mamoru is hurled back in time to the year 1985. Echosoft, the game company previously occupying the Alcohol Soft building, enlists Mamoru for help creating their own bishojo games.
I went on a walk with Echo!
!خرجت لأتمشّى مع إيكو
Ich war mit Echo spazieren!
Salí a pasear con Eco.
He salido a pasear con Eco.
Je me promenais avec Ecco.
Ho passeggiato con Echo!
Fui passear com o Echo!
Ходила гулять с Эхо!