diff --git a/Makefile b/Makefile
index 63a09b6..48899cf 100644
--- a/Makefile
+++ b/Makefile
@@ -6,4 +6,4 @@ LDFLAGS := $(shell pkg-config --libs ${LIBS})
 CC_COMMAND := ${CC} ${INCDIR} ${CFLAGS}
 all: build
 build:
-	${CC_COMMAND} src/util/string.c src/util/xml.c src/util/soup.c src/view/list_view_manga.c src/view/main_view.c src/manga.c src/backend/readmng.c manga.c main.c -o main ${LDFLAGS} -ggdb
+	${CC_COMMAND} src/util/xml.c src/util/soup.c src/view/list_view_manga.c src/view/main_view.c src/manga.c src/backend/readmng.c manga.c main.c -o main ${LDFLAGS} -ggdb
diff --git a/include/manga.h b/include/manga.h
index 708b4d0..ff8a9a7 100644
--- a/include/manga.h
+++ b/include/manga.h
@@ -24,7 +24,12 @@ struct String {
 
 struct SplittedString *
 split(char *re_str, size_t re_str_size, const char *subject, size_t subject_size);
+char *
+alloc_string(size_t len);
 void
 splitted_string_free (struct SplittedString *splitted_string);
 char *
 match_1 (char *re_str, char *subject);
+void
+copy_substring(const char *origin, char *dest, size_t dest_len, size_t start,
+        size_t len);
diff --git a/manga.c b/manga.c
index f272349..317a04b 100644
--- a/manga.c
+++ b/manga.c
@@ -4,8 +4,6 @@
 #include <pcre2.h>
 #endif
 
-#include <openmg/util/string.h>
-
 #include <manga.h>
 
 // TODO: Split this file and delete it.
@@ -14,6 +12,20 @@ iterate_string_to_split(struct SplittedString *splitted_string,
         pcre2_code *re, int *will_break, const char *subject,
         size_t subject_size, size_t *start_pos, size_t *offset);
 
+void
+copy_substring(const char *origin, char *dest, size_t dest_len, size_t start,
+        size_t len) {
+    size_t copying_offset = 0;
+    while (copying_offset < len) {
+        if (!(start+copying_offset <=dest_len)) {
+            fprintf(stderr, "Read attempt out of bounds.%ld %ld %ld\n", dest_len, start, len);
+            break;
+        }
+        dest[copying_offset] = origin[start+copying_offset];
+        copying_offset++;
+    }
+    dest[len] = '\0';
+}
 struct SplittedString *
 split(char *re_str, size_t re_str_size, const char *subject, size_t subject_size) {
     pcre2_code_8 *re;
@@ -43,6 +55,13 @@ split(char *re_str, size_t re_str_size, const char *subject, size_t subject_size
 
     return splitted_string;
 }
+
+char *
+alloc_string(size_t len) {
+    char * return_value = NULL;
+    return g_malloc (len + 1 * sizeof *return_value);
+}
+
 void
 splitted_string_free (struct SplittedString *splitted_string) {
     for (int i = 0; i<splitted_string->n_strings; i++) {
@@ -54,13 +73,11 @@ splitted_string_free (struct SplittedString *splitted_string) {
 }
 
 static void
-iterate_string_to_split(struct SplittedString *splitted_string,
-    pcre2_code *re, int *will_break, const char *subject,
+iterate_string_to_split(struct SplittedString *splitted_string, pcre2_code *re, int *will_break, const char *subject,
         size_t subject_size, size_t *start_pos, size_t *offset) {
     pcre2_match_data_8 *match_data;
     PCRE2_SIZE *ovector;
     int rc;
-    MgUtilString *string_util = mg_util_string_new ();
 
     splitted_string->n_strings++;
     match_data = pcre2_match_data_create_from_pattern_8 (re, NULL);
@@ -75,22 +92,24 @@ iterate_string_to_split(struct SplittedString *splitted_string,
     if (rc < 0) {
         struct String *current_substring = 
             &splitted_string->substrings [*offset];
-        current_substring->content = mg_util_string_alloc_string (string_util,
+        current_substring->content = alloc_string (subject_size 
+                - *start_pos);
+        copy_substring (subject, current_substring->content,
+                subject_size,
+                *start_pos,
                 subject_size - *start_pos);
-        mg_util_string_copy_substring (string_util, subject,
-                current_substring->content, subject_size,
-                *start_pos, subject_size - *start_pos);
         current_substring->size = subject_size - *start_pos;
 
         *will_break = 1;
         goto cleanup_iterate_string_to_split;
     }
     ovector = pcre2_get_ovector_pointer_8(match_data);
-    splitted_string->substrings[*offset].content = 
-        mg_util_string_alloc_string (string_util, ovector[0] - *start_pos);
-    mg_util_string_copy_substring (string_util,
-            subject, splitted_string->substrings[*offset].content,
-            subject_size, *start_pos,
+    splitted_string->substrings[*offset].content = alloc_string (
+            ovector[0] - *start_pos);
+    copy_substring (subject, splitted_string->substrings[*offset]
+            .content,
+            subject_size,
+            *start_pos,
             ovector[0] - *start_pos);
     splitted_string->substrings[*offset].size =
         ovector[0] - *start_pos;
diff --git a/src/manga.c b/src/manga.c
index a2b03b6..a67bff4 100644
--- a/src/manga.c
+++ b/src/manga.c
@@ -1,9 +1,7 @@
 #include <glib-object.h>
 
-#include <openmg/util/string.h>
-#include <openmg/manga.h>
-
 #include <manga.h>
+#include <openmg/manga.h>
 
 struct _MgManga {
     GObject parent_instance;
@@ -145,20 +143,12 @@ mg_manga_get_property (GObject *object,
 MgManga *
 mg_manga_new (const char *const image_url, const char *const title, const char *id) {
     MgManga *self = NULL;
-    MgUtilString *string_util = mg_util_string_new ();
     self = MG_MANGA ((g_object_new (MG_TYPE_MANGA, NULL)));
-    self->image_url = mg_util_string_alloc_string (string_util,
-            strlen (image_url));
-    self->title = mg_util_string_alloc_string (string_util,
-            strlen (title));
-    self->id = mg_util_string_alloc_string (string_util,
-            strlen (id));
-    mg_util_string_copy_substring (string_util,
-            image_url, self->image_url,
-            strlen(image_url) + 1, 0, strlen (image_url));
-    mg_util_string_copy_substring (string_util,
-            title, self->title, strlen(title) + 1, 0, strlen (title));
-    mg_util_string_copy_substring (string_util,
-            id, self->id, strlen(id) + 1, 0, strlen (id));
+    self->image_url = alloc_string (strlen (image_url));
+    self->title = alloc_string (strlen (title));
+    self->id = alloc_string (strlen (id));
+    copy_substring (image_url, self->image_url, strlen(image_url) + 1, 0, strlen (image_url));
+    copy_substring (title, self->title, strlen(title) + 1, 0, strlen (title));
+    copy_substring (id, self->id, strlen(id) + 1, 0, strlen (id));
     return self;
 }
diff --git a/src/util/xml.c b/src/util/xml.c
index 716b791..2d32e8b 100644
--- a/src/util/xml.c
+++ b/src/util/xml.c
@@ -3,7 +3,6 @@
 #include <libxml/HTMLparser.h>
 #include <libxml/xpath.h>
 
-#include <openmg/util/string.h>
 #include <openmg/util/xml.h>
 
 struct _MgUtilXML {
@@ -57,7 +56,6 @@ mg_util_xml_find_class (MgUtilXML *self, xmlNodePtr node, char *class,
 char *
 mg_util_xml_get_attr (MgUtilXML *self, xmlNodePtr const node, const char *attr_name) {
     char *return_value = NULL;
-    MgUtilString *string_util = mg_util_string_new ();
     if (!node) {
         return NULL;
     }
@@ -67,9 +65,11 @@ mg_util_xml_get_attr (MgUtilXML *self, xmlNodePtr const node, const char *attr_n
             if (!attr->children->content) continue;
             size_t content_len = strlen((char *) 
                     attr->children->content);
-            return_value = mg_util_string_alloc_string (string_util, content_len);
-            mg_util_string_copy_substring (string_util, (char *) attr->children->content,
-                return_value, content_len, 0, content_len);                    
+            return_value = alloc_string(content_len);
+            copy_substring ((char *) attr->children->content, return_value,
+                    content_len,
+                    0,
+                    content_len);                    
             break;
         }
     }