Here is an Ar nosurge Plus US save that has the Sekailink elements added to it: In other words, it adds the following: You get several plugins from the start that can’t be gotten anywhere else. Ion gets three more costumes from her Ciel nosurge clothes selection. Several conversations in the Ion/Earthes side change to reflect that you know about Ciel nosurge’s events, explaining some things that were left up in the air in Ciel and in a normal Ar nosurge playthrough. It also shows the relationship status with Ion at the end of Ciel (married in the save file I put up).
