diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/core/AbstractMangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/core/AbstractMangaParser.kt
index 4b09db57..0b49e530 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/core/AbstractMangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/core/AbstractMangaParser.kt
@@ -59,6 +59,10 @@ public abstract class AbstractMangaParser @InternalParsersApi constructor(
 	@JvmField
 	protected val webClient: WebClient = OkHttpWebClient(context.httpClient, source)
 
+	@Deprecated("Please check searchQueryCapabilities")
+	final override val filterCapabilities: MangaListFilterCapabilities
+		get() = super.filterCapabilities
+
 	/**
 	 * Fetch direct link to the page image.
 	 */
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/ExHentaiParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/ExHentaiParser.kt
index 193a83b0..88683bbe 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/ExHentaiParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/ExHentaiParser.kt
@@ -49,6 +49,8 @@ internal class ExHentaiParser(
 		get() = "https://${domain}/bounce_login.php"
 
 	private val ratingPattern = Regex("-?[0-9]+px")
+	private val titleCleanupPattern = Regex("(\\[.*?]|\\([C0-9]*\\))")
+	private val spacesCleanupPattern = Regex("(^\\s+|\\s+\$|\\s+(?=\\s))")
 	private val authCookies = arrayOf("ipb_member_id", "ipb_pass_hash")
 	private val nextPages = SparseArrayCompat<Long>()
 	private val suspiciousContentKey = ConfigKey.ShowSuspiciousContent(false)
@@ -350,6 +352,15 @@ internal class ExHentaiParser(
 		keys.add(suspiciousContentKey)
 	}
 
+	override suspend fun getRelatedManga(seed: Manga): List<Manga> {
+		val query = seed.title
+		return getListPage(
+			page = 0,
+			order = defaultSortOrder,
+			filter = MangaListFilter(query = query),
+		)
+	}
+
 	private fun isAuthorized(domain: String): Boolean {
 		val cookies = context.cookieJar.getCookies(domain).mapToSet { x -> x.name }
 		return authCookies.all { it in cookies }
@@ -369,20 +380,8 @@ internal class ExHentaiParser(
 	}
 
 	private fun String.cleanupTitle(): String {
-		val result = StringBuilder(length)
-		var skip = false
-		for (c in this) {
-			when {
-				c == '[' -> skip = true
-				c == ']' -> skip = false
-				c.isWhitespace() && result.isEmpty() -> continue
-				!skip -> result.append(c)
-			}
-		}
-		while (result.lastOrNull()?.isWhitespace() == true) {
-			result.deleteCharAt(result.lastIndex)
-		}
-		return result.toString()
+		return replace(titleCleanupPattern, "")
+			.replace(spacesCleanupPattern, "")
 	}
 
 	private fun Element.parseTags(): Set<MangaTag> {
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParserEnv.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParserEnv.kt
index 8c22c7a0..bdf0e71f 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParserEnv.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParserEnv.kt
@@ -2,10 +2,10 @@ package org.koitharu.kotatsu.parsers.util
 
 import okhttp3.HttpUrl
 import org.jsoup.nodes.Element
-import org.koitharu.kotatsu.parsers.core.LegacyMangaParser
 import org.koitharu.kotatsu.parsers.ErrorMessages
 import org.koitharu.kotatsu.parsers.InternalParsersApi
 import org.koitharu.kotatsu.parsers.MangaParser
+import org.koitharu.kotatsu.parsers.core.LegacyMangaParser
 import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 
@@ -82,9 +82,6 @@ private fun <T> Set<T>?.oneOrThrowIfMany(msg: String): T? = when {
 	else -> throw IllegalArgumentException(msg)
 }
 
-public val LegacyMangaParser.domain: String
-	get() = config[configKeyDomain]
-
 @InternalParsersApi
 public fun LegacyMangaParser.getDomain(subdomain: String): String {
 	val domain = domain
@@ -92,7 +89,7 @@ public fun LegacyMangaParser.getDomain(subdomain: String): String {
 }
 
 @InternalParsersApi
-public fun LegacyMangaParser.urlBuilder(subdomain: String? = null): HttpUrl.Builder {
+public fun MangaParser.urlBuilder(subdomain: String? = null): HttpUrl.Builder {
 	return HttpUrl.Builder()
 		.scheme(SCHEME_HTTPS)
 		.host(if (subdomain == null) domain else "$subdomain.$domain")
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/RelatedMangaFinder.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/RelatedMangaFinder.kt
index 03b76f9c..8a8e1dfe 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/RelatedMangaFinder.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/RelatedMangaFinder.kt
@@ -27,7 +27,7 @@ public class RelatedMangaFinder(
 	private suspend fun findRelatedImpl(scope: CoroutineScope, parser: MangaParser, seed: Manga): List<Manga> {
 		val words = HashSet<String>()
 		words += seed.title.splitByWhitespace()
-		seed.altTitle?.let {
+		seed.altTitles.forEach {
 			words += it.splitByWhitespace()
 		}
 		if (words.isEmpty()) {