diff --git a/ReadingSystems/boookvia/night.css b/ReadingSystems/boookvia/night.css
new file mode 100644
index 0000000..101f80b
--- /dev/null
+++ b/ReadingSystems/boookvia/night.css
@@ -0,0 +1,11 @@
+body {
+    -webkit-filter: invert(1) hue-rotate(180deg);
+    -webkit-transform: translateZ(0);
+    background-color: white;
+}
+
+img, video {
+    -webkit-filter: invert(1) hue-rotate(180deg) contrast(60%) saturate(1.6);
+    -webkit-transform: translateZ(0);
+}
+
diff --git a/ReadingSystems/boookvia/reader.css b/ReadingSystems/boookvia/reader.css
new file mode 100644
index 0000000..bafde29
--- /dev/null
+++ b/ReadingSystems/boookvia/reader.css
@@ -0,0 +1,33 @@
+body {
+    padding: 0;
+}
+
+iframe {
+    background-color: white;
+}
+
+/* Reflowable layout */
+
+#reflowable-content-frame {
+    overflow: hidden;
+}
+
+/* Fixed layout */
+
+.fixed-page-frame-left {
+    left: 0;
+    width: 50%;
+    height: 100%;
+}
+
+.fixed-page-frame-right {
+    left: 50%;
+    width: 50%;
+    height: 100%;
+}
+
+.fixed-page-frame-center {
+    left: 0;
+    width: 100%;
+    height: 100%;
+}
diff --git a/ReadingSystems/boookvia/readme.md b/ReadingSystems/boookvia/readme.md
new file mode 100644
index 0000000..72d8756
--- /dev/null
+++ b/ReadingSystems/boookvia/readme.md
@@ -0,0 +1,7 @@
+# Bookvia
+
+Multiple references (and files related) to Mantano/Bookari can be found in the iOS package (besides Readium.shared.js).
+
+It is very likely this app is built with the Bookari Reading System, especially as there is a lot of MNO-prefixed files and this reading system supports [Readium’s LCP](http://readium.org/projects/readium-lcp) (Sony DRM scheme is compatible with it).
+
+CSS provided from Mantano’s folder in the app’s package.
\ No newline at end of file
diff --git a/ReadingSystems/boookvia/sdk.css b/ReadingSystems/boookvia/sdk.css
new file mode 100644
index 0000000..e77a771
--- /dev/null
+++ b/ReadingSystems/boookvia/sdk.css
@@ -0,0 +1,104 @@
+html {
+    height: 100%;
+    margin: 0;
+}
+
+body {
+    height: 100%;
+    width: 100%;
+    margin: 0;
+    padding: 10px;
+    position: absolute;
+    overflow: hidden;
+    box-sizing:border-box;
+	-moz-box-sizing:border-box; /* Firefox */
+	-webkit-box-sizing:border-box; /* Safari */
+}
+
+iframe {
+    border-width: 0;
+}
+
+#viewport {
+    width: 100%;
+    height: 100%;
+    position: relative;
+    
+    overflow: auto; /* pan-zoom feature, fixed layout pages */
+}
+
+
+/*Fixed layout */
+
+#fixed-book-frame {
+    position: absolute !important;
+}
+
+
+
+.iframe-fixed {
+    width: 100%;
+    height: 100%;
+}
+
+
+/*Reflowable layout*/
+
+#reflowable-book-frame {
+    position: absolute !important;
+    left:0;
+    top:0;
+    right: 0;
+    bottom: 0;
+}
+
+#reflowable-content-frame {
+    position: absolute !important;
+    opacity: 1;
+    visibility: visible;
+}
+
+.content-doc-frame {
+    position: relative !important;
+}
+
+/*Classes to use for styling the book*/
+
+/*book*/
+.book-frame {
+
+}
+
+.fixed-book-frame {
+
+}
+
+/*fixed layout frames only*/
+.fixed-page-frame, .fixed-page-frame-left, .fixed-page-frame-right, .fixed-page-frame-center {
+    position: absolute !important;
+}
+
+.fixed-page-frame-left {
+
+}
+
+.fixed-page-frame-right {
+
+}
+
+.fixed-page-frame-center {
+
+} 
+
+/*reflowable layout*/
+.reflowable-book-frame {
+
+}
+
+.reflowable-content-frame {
+
+}
+
+.mo-active-default {
+
+}