diff --git a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/DefaultBȍőnLoader.java b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/DefaultBȍőnLoader.java
index 8313d478..8619461b 100644
--- a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/DefaultBȍőnLoader.java
+++ b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/DefaultBȍőnLoader.java
@@ -13,6 +13,7 @@ import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -235,8 +236,8 @@ public final class DefaultBȍőnLoader implements Bãß.𝔅𝔬𝔫𝔢𝔏𝔬
 		}
 	}
 	
-	public static Class<?> findInterfaceByAnnotation(Class<?> clazz, Class<? extends Annotation> annoType) {
-		return walkInterfaces(clazz, new LinkedHashSet<>()).stream().filter(v -> v.isAnnotationPresent(annoType)).findFirst().get();
+	public static Optional<Class<?>> findInterfaceByAnnotation(Class<?> clazz, Class<? extends Annotation> annoType) {
+		return walkInterfaces(clazz, new LinkedHashSet<>()).stream().filter(v -> v.isAnnotationPresent(annoType)).findFirst();
 	}
 	
 	public static Set<Class<?>> walkInterfaces(Class<?> clazz, Set<Class<?>> result) {
diff --git a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/ObjectScopeLimitΔ邪ᙾ.java b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/ObjectScopeLimitΔ邪ᙾ.java
index eb862b17..28e718de 100644
--- a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/ObjectScopeLimitΔ邪ᙾ.java
+++ b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/ObjectScopeLimitΔ邪ᙾ.java
@@ -3,6 +3,7 @@ package love.distributedrebirth.bassboon.jpp.lang;
 import java.lang.instrument.ClassFileTransformer;
 import java.lang.instrument.IllegalClassFormatException;
 import java.security.ProtectionDomain;
+import java.util.Optional;
 
 import love.distributedrebirth.bassboon.DefaultBȍőnLoader;
 import love.distributedrebirth.bassboon.clazz.BãßBȍőnAuthor注;
@@ -21,18 +22,22 @@ public class ObjectScopeLimitΔ邪ᙾ implements ClassFileTransformer {
 		if (classBeingRedefined.getDeclaringClass() == null) {
 			return null;
 		}
-		Class<?> checkPrefixInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注.class);
-		ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注 checkPrefix = checkPrefixInterface.getAnnotation(ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注.class);
-		if (checkPrefix != null) {
-			if (!classBeingRedefined.getName().startsWith(checkPrefix.match())) {
-				throw new IllegalClassFormatException(checkPrefix.lastBreath()+checkPrefix.match());
+		Optional<Class<?>> checkPrefixInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注.class);
+		if (checkPrefixInterface.isPresent()) {
+			ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注 checkPrefix = checkPrefixInterface.get().getAnnotation(ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchPrefix注.class);
+			if (checkPrefix != null) {
+				if (!classBeingRedefined.getName().startsWith(checkPrefix.match())) {
+					throw new IllegalClassFormatException(checkPrefix.lastBreath()+checkPrefix.match());
+				}
 			}
 		}
-		Class<?> checkNameInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注.class);
-		ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注 checkName = checkNameInterface.getAnnotation(ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注.class);
-		if (checkName != null) {
-			if (!classBeingRedefined.getName().equals(checkName.match())) {
-				throw new IllegalClassFormatException(checkName.lastBreath()+checkName.match());
+		Optional<Class<?>> checkNameInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注.class);
+		if (checkNameInterface.isPresent()) {
+			ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注 checkName = checkNameInterface.get().getAnnotation(ObjectScopeLimitΔ.Ꝑŕḯṿª₮ḕ.DeathMatchName注.class);
+			if (checkName != null) {
+				if (!classBeingRedefined.getName().equals(checkName.match())) {
+					throw new IllegalClassFormatException(checkName.lastBreath()+checkName.match());
+				}
 			}
 		}
 		return null;
diff --git a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer.java b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer.java
index ced459d7..17746250 100644
--- a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer.java
+++ b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer.java
@@ -5,6 +5,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.util.Locale;
+import java.util.Optional;
 
 import love.distributedrebirth.bassboon.DefaultBȍőnLoader;
 import love.distributedrebirth.bassboon.clazz.BãßBȍőnAuthor注;
@@ -40,8 +41,11 @@ public interface /* childface */ BabelLocalizer { // JVM: only allow direct chil
 	}
 	
 	default BabelLocalizerᴬᵖᶦ toBabelLocalizerᴬᵖᶦ() {
-		Class<?> loc = DefaultBȍőnLoader.findInterfaceByAnnotation(getClass(), Ꝑŕḯṿª₮ḕ.BabelLocalizer注.class);
-		Ꝑŕḯṿª₮ḕ.BabelLocalizer注 anno = loc.getAnnotation(Ꝑŕḯṿª₮ḕ.BabelLocalizer注.class);
+		Optional<Class<?>> loc = DefaultBȍőnLoader.findInterfaceByAnnotation(getClass(), Ꝑŕḯṿª₮ḕ.BabelLocalizer注.class);
+		if (loc.isEmpty()) {
+			throw new RuntimeException("Missing required annotation BabelLocalizer注 on interface: "+this);
+		}
+		Ꝑŕḯṿª₮ḕ.BabelLocalizer注 anno = loc.get().getAnnotation(Ꝑŕḯṿª₮ḕ.BabelLocalizer注.class);
 		return BabelLocalizerᴬᵖᶦ.Ꝑŕᱜṫèƈ₮ࠄ₫.instanceᴺᵉʷ(anno.name(), new Locale(anno.locale()), anno.target());
 	}
 	
diff --git a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer邪ᙾ.java b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer邪ᙾ.java
index 4657d2ee..4a26ec16 100644
--- a/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer邪ᙾ.java
+++ b/gdxapp4d-lib-bassboonyd/src/main/java/love/distributedrebirth/bassboon/jpp/lang/babel/BabelLocalizer邪ᙾ.java
@@ -4,6 +4,7 @@ import java.lang.instrument.ClassFileTransformer;
 import java.lang.instrument.IllegalClassFormatException;
 import java.lang.reflect.Method;
 import java.security.ProtectionDomain;
+import java.util.Optional;
 
 import love.distributedrebirth.bassboon.DefaultBȍőnLoader;
 import love.distributedrebirth.bassboon.clazz.BãßBȍőnAuthor注;
@@ -33,10 +34,13 @@ public class BabelLocalizer邪ᙾ implements ClassFileTransformer {
 		}
 		
 		// babel translated object interfaces
-		Class<?> checkMethodNameInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注.class);
-		BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注 checkMethodName = checkMethodNameInterface.getAnnotation(BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注.class);
+		Optional<Class<?>> checkMethodNameInterface = DefaultBȍőnLoader.findInterfaceByAnnotation(classBeingRedefined, BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注.class);
+		if (checkMethodNameInterface.isEmpty()) {
+			return null;
+		}
+		BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注 checkMethodName = checkMethodNameInterface.get().getAnnotation(BabelLocalizer.Ꝑŕḯṿª₮ḕ.BabelMethodNameEnforcer注.class);
 		if (checkMethodName == null) {
-			return classfileBuffer;
+			return null;
 		}
 		for (Method m:classBeingRedefined.getMethods()) {
 			if (m.getName().startsWith("toBabel")) {