diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
index bb77005ad..b5405e8d6 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
@@ -3,6 +3,22 @@ kind: MariaDB
 metadata:
   name: mariadb
 spec:
+  initContainers:
+    - image: mariadb:10.11.6
+      env:
+        - name: DB_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: mariadb-pr-review-password
+              key: prod-mariadb-password
+      volumeMounts:
+        - name: sqldump-volume
+          mountPath: /docker-entrypoint-initdb.d
+      args:
+        - "sh"
+        - "-c"
+        - 'mysqldump -umcserver -p${DB_PASSWORD} -h192.168.2.186 --databases seichiassist flyway_managed_schema > /docker-entrypoint-initdb.d/seichiassist.sql'
+
   rootPasswordSecretKeyRef:
     name: mariadb-pr-review-password
     key: root-password
@@ -30,5 +46,13 @@ spec:
     accessModes:
       - ReadWriteOnce
 
+  volumeMounts:
+    - name: sqldump-volume
+      mountPath: /docker-entrypoint-initdb.d
+
   service:
     type: ClusterIP
+
+  volumes:
+    - name: sqldump-volume
+      emptyDir: {}
diff --git a/terraform/onp_cluster_secrets.tf b/terraform/onp_cluster_secrets.tf
index 0fd963eff..5a2272d24 100644
--- a/terraform/onp_cluster_secrets.tf
+++ b/terraform/onp_cluster_secrets.tf
@@ -229,6 +229,7 @@ resource "helm_release" "onp_minecraft__pr_review_mariadb_password" {
       data:
         root-password: ""
         mcserver-password: ""
+        prod-mariadb-password: ${base64encode(var.minecraft__prod_game_db__password)}
     EOS
     ]
   }