diff --git a/paw/stos/head/ke/bpal.h b/paw/stos/head/ke/bpal.h
new file mode 100644
index 0000000..e00c56d
--- /dev/null
+++ b/paw/stos/head/ke/bpal.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description:  Boot protocol abstraction layer
+ * Author:       Chloe M.
+ */
+
+#ifndef _KE_BPAL_H_
+#define _KE_BPAL_H_ 1
+
+#include <stdef.h>
+
+/*
+ * Boot protocol abstraction handle
+ *
+ * @KernelBase:     Kernel load base
+ */
+typedef struct {
+    UPTR KernelBase;
+} BPAL_HANDLE;
+
+/*
+ * Initialize the boot protocol abstraction layer
+ */
+VOID KeBpalInit(VOID);
+
+#endif  /* !_KE_BPAL_H_ */
diff --git a/paw/stos/head/ke/stos.h b/paw/stos/head/ke/stos.h
new file mode 100644
index 0000000..91e5cdb
--- /dev/null
+++ b/paw/stos/head/ke/stos.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: OS specific constants
+ * Author:      Chloe M.
+ */
+
+#ifndef _KE_STOS_H_
+#define _KE_STOS_H_ 1
+
+/* Slut technology version */
+#define ST_VERSION "v0.0.1 ~ pre-alpha"
+
+#endif  /* !_KE_STOS_H_ */
diff --git a/paw/stos/init/init.c b/paw/stos/init/init.c
index 0297435..1c1de83 100644
--- a/paw/stos/init/init.c
+++ b/paw/stos/init/init.c
@@ -7,6 +7,7 @@
  */
 
 #include <ex/trace.h>
+#include <ke/stos.h>
 #include <hal/serial.h>
 #include <stdef.h>
 
@@ -16,7 +17,7 @@
 static VOID
 BootBanner(VOID)
 {
-    TRACE("Machine has been turned on~\n");
+    TRACE("SystemPaw3 ~ %s\n", ST_VERSION);
     TRACE("Booting SystemPaw3 !! <3\n");
 }