diff --git a/src/database/mod.rs b/src/database/mod.rs
index afa6eb8..9dc3cf6 100644
--- a/src/database/mod.rs
+++ b/src/database/mod.rs
@@ -500,6 +500,13 @@ impl Database {
       let is_reverse = p_def.hierarchy.contains(&rel.destination_type)
         && c_def.hierarchy.contains(&rel.source_type);
 
+      // A self-referential edge on a shared ancestor table (entity.parent_id -> entity) matches
+      // both ways for every type pair. Includes always start from the parent and list what hangs
+      // under it, so the edge is read in reverse — never from a child up to its parent object.
+      if is_forward && is_reverse {
+        is_forward = false;
+      }
+
       // Structural Cardinality Filtration:
       // If the schema requires a collection (Array), it is mathematically impossible for a pure
       // Forward scalar edge (where the parent holds exactly one UUID pointer) to fulfill a One-to-Many request.