diff --git a/apps/tests/phase116_if_only_keep_plus_call_min.hako b/apps/tests/phase116_if_only_keep_plus_call_min.hako
new file mode 100644
index 00000000..b2ac3a96
--- /dev/null
+++ b/apps/tests/phase116_if_only_keep_plus_call_min.hako
@@ -0,0 +1,23 @@
+// Phase 116: if-only keep+call merge parity
+// Test one side keeps original value, other side calls function
+
+static box Main {
+  f(x) {
+    return x + 1
+  }
+
+  g(flag) {
+    local v
+    v = 10
+    if flag == 1 {
+      v = me.f(1)
+    }
+    print(v)
+  }
+
+  main() {
+    me.g(0)
+    me.g(1)
+    return "OK"
+  }
+}
diff --git a/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_llvm_exe.sh b/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_llvm_exe.sh
new file mode 100644
index 00000000..881cfb88
--- /dev/null
+++ b/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_llvm_exe.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+# Phase 116: if-only keep+call merge parity (LLVM EXE)
+
+source "$(dirname "$0")/../../../lib/test_runner.sh"
+source "$(dirname "$0")/../../../lib/llvm_exe_runner.sh"
+export SMOKES_USE_PYVM=0
+require_env || exit 2
+
+llvm_exe_preflight_or_skip || exit 0
+
+# Phase 97/98/100 SSOT: plugin dlopen check → build only if needed → dlopen recheck.
+FILEBOX_SO="$NYASH_ROOT/plugins/nyash-filebox-plugin/libnyash_filebox_plugin.so"
+MAPBOX_SO="$NYASH_ROOT/plugins/nyash-map-plugin/libnyash_map_plugin.so"
+STRINGBOX_SO="$NYASH_ROOT/plugins/nyash-string-plugin/libnyash_string_plugin.so"
+CONSOLEBOX_SO="$NYASH_ROOT/plugins/nyash-console-plugin/libnyash_console_plugin.so"
+INTEGERBOX_SO="$NYASH_ROOT/plugins/nyash-integer-plugin/libnyash_integer_plugin.so"
+
+LLVM_REQUIRED_PLUGINS=(
+  "FileBox|$FILEBOX_SO|nyash-filebox-plugin"
+  "MapBox|$MAPBOX_SO|nyash-map-plugin"
+  "StringBox|$STRINGBOX_SO|nyash-string-plugin"
+  "ConsoleBox|$CONSOLEBOX_SO|nyash-console-plugin"
+  "IntegerBox|$INTEGERBOX_SO|nyash-integer-plugin"
+)
+LLVM_PLUGIN_BUILD_LOG="/tmp/phase116_if_only_keep_plus_call_plugin_build.log"
+llvm_exe_ensure_plugins_or_fail || exit 1
+
+INPUT_HAKO="$NYASH_ROOT/apps/tests/phase116_if_only_keep_plus_call_min.hako"
+OUTPUT_EXE="$NYASH_ROOT/tmp/phase116_if_only_keep_plus_call_llvm_exe"
+
+EXPECTED=$'10\n2'
+EXPECTED_LINES=2
+LLVM_BUILD_LOG="/tmp/phase116_if_only_keep_plus_call_build.log"
+if llvm_exe_build_and_run_numeric_smoke; then
+  test_pass "phase116_if_only_keep_plus_call_llvm_exe: output matches expected (10\\n2)"
+else
+  exit 1
+fi
diff --git a/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_vm.sh b/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_vm.sh
new file mode 100644
index 00000000..66be4be7
--- /dev/null
+++ b/tools/smokes/v2/profiles/integration/apps/phase116_if_only_keep_plus_call_vm.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+# Phase 116: if-only keep+call merge parity (VM)
+#
+# Verifies that if-only with one side keeping original value and other side calling works correctly.
+
+source "$(dirname "$0")/../../../lib/test_runner.sh"
+source "$(dirname "$0")/../../../lib/output_validator.sh"
+export SMOKES_USE_PYVM=0
+require_env || exit 2
+
+PASS_COUNT=0
+FAIL_COUNT=0
+RUN_TIMEOUT_SECS=${RUN_TIMEOUT_SECS:-10}
+
+INPUT="$NYASH_ROOT/apps/tests/phase116_if_only_keep_plus_call_min.hako"
+
+echo "[INFO] Phase 116: if-only keep+call merge parity (VM) - $INPUT"
+
+set +e
+OUTPUT=$(timeout "$RUN_TIMEOUT_SECS" env \
+  NYASH_DISABLE_PLUGINS=1 \
+  HAKO_JOINIR_STRICT=1 \
+  "$NYASH_BIN" --backend vm "$INPUT" 2>&1)
+EXIT_CODE=$?
+set -e
+
+if [ "$EXIT_CODE" -eq 124 ]; then
+  echo "[FAIL] hakorune timed out (>${RUN_TIMEOUT_SECS}s)"
+  FAIL_COUNT=$((FAIL_COUNT + 1))
+elif [ "$EXIT_CODE" -eq 0 ]; then
+  EXPECTED=$'10\n2'
+  if validate_numeric_output 2 "$EXPECTED" "$OUTPUT"; then
+    echo "[PASS] Output verified: 10\\n2"
+    PASS_COUNT=$((PASS_COUNT + 1))
+  else
+    echo "[INFO] output (tail):"
+    echo "$OUTPUT" | tail -n 50 || true
+    FAIL_COUNT=$((FAIL_COUNT + 1))
+  fi
+else
+  echo "[FAIL] hakorune failed with exit code $EXIT_CODE"
+  echo "[INFO] output (tail):"
+  echo "$OUTPUT" | tail -n 50 || true
+  FAIL_COUNT=$((FAIL_COUNT + 1))
+fi
+
+echo "[INFO] PASS: $PASS_COUNT, FAIL: $FAIL_COUNT"
+
+if [ "$FAIL_COUNT" -eq 0 ]; then
+  test_pass "phase116_if_only_keep_plus_call_vm: All tests passed"
+  exit 0
+else
+  test_fail "phase116_if_only_keep_plus_call_vm: $FAIL_COUNT test(s) failed"
+  exit 1
+fi