diff --git a/honoka/libhonoka/honokapluginbase.h b/honoka/libhonoka/honokapluginbase.h
index f44ee88..52d0aee 100644
--- a/honoka/libhonoka/honokapluginbase.h
+++ b/honoka/libhonoka/honokapluginbase.h
@@ -40,6 +40,7 @@
 #define HONOKA_CONFIG_KEY_CONVERTOR_PREFIX         "/IMEngine/Honoka/Key/Convertor"
 #define HONOKA_CONFIG_KEY_PREEDITOR_PREFIX         "/IMEngine/Honoka/Key/PreEditor"
 #define HONOKA_CONFIG_KEY_PREDICTOR_PREFIX         "/IMEngine/Honoka/Key/Predictor"
+#define HONOKA_CONFIG_KEY_FILTER_PREFIX            "/IMEngine/Honoka/Key/Filter"
 
 
 
diff --git a/honoka/src/honoka_imengine.cpp b/honoka/src/honoka_imengine.cpp
index fa253a2..a0fc21d 100644
--- a/honoka/src/honoka_imengine.cpp
+++ b/honoka/src/honoka_imengine.cpp
@@ -509,6 +509,12 @@
             _scim_config->read(String(HONOKA_CONFIG_KEY_PREDICTOR_PREFIX) + String("/") + predictors[i]->getName(),String("")));
         k_predictor.push_back(k);
     }
+    for(unsigned int i = 0;i < filters.size();i ++) {
+        HonokaKeyEventList k;
+        scim_string_to_key_list(k,
+            _scim_config->read(String(HONOKA_CONFIG_KEY_FILTER_PREFIX) + String("/") + filters[i]->getName(),String("")));
+        k_filter.push_back(k);
+    }
     
     if (save_setting) {
         changePreEditor(_scim_config->read(String(HONOKA_PREVIOUS_PREEDITOR),String()));
@@ -985,6 +991,15 @@
             return true;
         }
     }
+    for(unsigned int i = 0;i < k_filter.size();i ++) {
+        if (k_filter[i].comp(key)) {
+            if (filters[i] == m_filter) return true;
+            //m_predictor = predictors[i];
+            changeFilter(filters[i]->getName());
+            updatePreEditor();
+            return true;
+        }
+    }
 
     // 処理。
     if (k_reconversion.comp(key)) {
@@ -1508,6 +1523,28 @@
         }
     }
     
+    // フィルタ選択キー
+    for(unsigned int i = 0;i < k_filter.size();i ++) {
+        if (k_filter[i].comp(key)) {
+            TextFilter *f = m_filter;
+            if (filters[i] != m_filter) changeFilter(filters[i]->getName());
+            commit_string(m_filter->filter(segments));
+            m_filter = f;
+            m_convertor->updateFrequency();
+            if (prediction) if (m_predictor->isConnected()) m_predictor->update(getConvertedText(),m_preeditor->getText(true));
+            m_preeditor->reset();
+            m_convertor->reset();
+            m_conversion = false;
+            updatePreEditor();
+            m_lookup = false;
+            alp_count = 1;
+            if (m_def_convertor != m_convertor) m_convertor = m_def_convertor;
+            updateProperty();
+            return true;
+        }
+    }
+
+    
     // それ以外のキーの場合、表示可能キーなら確定してPreEdit入力を再開。
     if (key.get_unicode_code()) {
         commit_string(getConvertedText());
diff --git a/honoka/src/honoka_imengine.h b/honoka/src/honoka_imengine.h
index 695b425..611b0bc 100644
--- a/honoka/src/honoka_imengine.h
+++ b/honoka/src/honoka_imengine.h
@@ -236,6 +236,7 @@
     vector<HonokaKeyEventList> k_convertor;
     vector<HonokaKeyEventList> k_preeditor;
     vector<HonokaKeyEventList> k_predictor;
+    vector<HonokaKeyEventList> k_filter;
 };