Try this Shizuku fix

app/src/main/java/eu/kanade/tachiyomi/extension/installer/ShizukuInstaller.kt

@@ -14,10 +14,12 @@ import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
 import logcat.LogPriority
 import rikka.shizuku.Shizuku
+import rikka.shizuku.ShizukuRemoteProcess
 import tachiyomi.core.common.util.system.logcat
 import tachiyomi.i18n.MR
 import java.io.BufferedReader
 import java.io.InputStream
+import java.lang.reflect.Method
 
 class ShizukuInstaller(private val service: Service) : Installer(service) {
 
@@ -93,9 +95,9 @@ class ShizukuInstaller(private val service: Service) : Installer(service) {
         super.onDestroy()
     }
 
+    private val newProcess: Method
     private fun exec(command: String, stdin: InputStream? = null): ShellResult {
-        @Suppress("DEPRECATION")
-        val process = Shizuku.newProcess(arrayOf("sh", "-c", command), null, null)
+        val process = newProcess.invoke(null, arrayOf("sh", "-c", command), null, null) as ShizukuRemoteProcess
         if (stdin != null) {
             process.outputStream.use { stdin.copyTo(it) }
         }
@@ -122,6 +124,9 @@ class ShizukuInstaller(private val service: Service) : Installer(service) {
             service.stopSelf()
             false
         }
+        newProcess = Shizuku::class.java
+            .getDeclaredMethod("newProcess", Array::class.java, Array::class.java, String::class.java)
+        newProcess.isAccessible = true
     }
 }
 

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ leakcanary = "2.14"
 moko = "0.24.2"
 okhttp_version = "5.0.0-alpha.14"
 richtext = "0.20.0"
-shizuku_version = "13.1.0"
+shizuku_version = "13.1.5"
 sqldelight = "2.0.2"
 sqlite = "2.4.0"
 voyager = "1.0.0"