《Memoria Paralela》は、記憶喪失になった友人をモチーフにした《did I?》（2011年）と《Lineament》（2012年）の二連作の続編にあたる作品です。友人に降りかかった事象を物語の軸とし、人の記憶と意識のありかについて考察した前二作とは対照的に、本作はさわの視点から物語が描かれます。
作中では友人の意識とさわの経験や意識が幾度か交差します。友人の中にある時間は、記憶喪失によって一度リセットされているものの以前と同じ時間の線上にあります。そのことをさわは、「Memoria Paralela＝平行記憶」と呼びます。

For the past decade Sawa has been working on a trilogy as well as a collection of shorter studies exploring the emotional and psychological landscape of amnesia, entitled Figment. The series is based on the experience of his close friend, who in the summer of 2007, lay down for a short nap on the couch of his workplace, and when he woke up, he had lost his memory. The first work of the trilogy did I? (2010), portrayed memory loss as a form of erasure, while the second work Lineament (2012) describes the replacement or offsetting from one place to another through memory loss, and its connection to time. The third and final work of the trilogy, Memoria Paralela (2019), is a 2-channel video installation portraying Sawa’s friend’s current life; and is his first significant work exploring the use of text and narration. Sawa’s highly developed technique and style can be recognized through his use of reoccurring motifs, superimposed imagery, delicate soundtrack, as well as the inclusion of objects in the exhibition space.