diff --git a/after/plugin/sessions.lua b/after/plugin/sessions.lua
index 9cc8968..be5fb27 100644
--- a/after/plugin/sessions.lua
+++ b/after/plugin/sessions.lua
@@ -1,13 +1,10 @@
-require("auto-session").setup {
-    log_level = "error",
-    auto_session_suppress_dirs = { "~/", "~/Projects", "~/Downloads", "/"},
-}
-
-require("session-lens").setup({
-    path_display = {"shorten"},
-    theme_conf = { border = true },
-    previewer = false,
-})
-
-
-vim.keymap.set("n", "<leader>ss", ":SearchSession<CR>")
+sessions = require("seshmgr")
+
+sessions.setup({
+    session_dir = os.getenv("HOME") .. "/.nvim/sessions",
+
+    telescope = {
+        enabled = true,
+        keymap = "<leader>ss",
+    },
+})
diff --git a/after/plugin/undotree.lua b/after/plugin/undotree.lua
index ac2c495..7ce41e1 100644
--- a/after/plugin/undotree.lua
+++ b/after/plugin/undotree.lua
@@ -1,2 +1,7 @@
 -- advanced undo history
 vim.keymap.set("n", "<leader>u", vim.cmd.UndotreeToggle)
+
+vim.opt.undodir = os.getenv("HOME") .. "/.nvim/undodir"
+vim.opt.swapfile = false
+vim.opt.backup = false
+vim.opt.undofile = true
diff --git a/lua/sevi-kun/plugins.lua b/lua/sevi-kun/plugins.lua
index 7a4ea27..22af5ac 100644
--- a/lua/sevi-kun/plugins.lua
+++ b/lua/sevi-kun/plugins.lua
@@ -11,25 +11,33 @@ return {
 
     -- useful
 
-    { dir = "/mnt/nas_belar/code/vim-plugins/narrator.nvim" },
-
-    { "rmagatti/session-lens",
-        dependencies = {
-            "rmagatti/auto-session",
-            "nvim-telescope/telescope.nvim"
-        }
-    },
+    --{ dir = "/mnt/nas_belar/code/vim-plugins/narrator.nvim" },
 
     { "nvim-telescope/telescope.nvim",
         version = "0.1.x",
         dependencies = { "nvim-lua/plenary.nvim" }
     },
 
+    { "mackeper/SeshMgr.nvim",
+        event = "VeryLazy"
+    },
+
     { "ThePrimeagen/harpoon",
         branch = "harpoon2",
         dependencies = { "nvim-lua/plenary.nvim" },
     },
 
+    { "ThePrimeagen/refactoring.nvim",
+        dependencies = {
+            "nvim-lua/plenary.nvim",
+            "nvim-treesitter/nvim-treesitter",
+        },
+        lazy = false,
+        config = function()
+            require("refactoring").setup()
+        end,
+    },
+
     { "NeogitOrg/neogit",
         branch = "master",
         dependencies = {
@@ -150,48 +158,16 @@ return {
         end
     },
 
+    -- Style Checker
+
+    { "averms/black-nvim" },
 
     -- trouble
 
     { "folke/trouble.nvim",
-        branch = "dev", -- IMPORTANT!
-        keys = {
-            {
-                "<leader>xx",
-                "<cmd>Trouble diagnostics toggle<cr>",
-                desc = "Diagnostics (Trouble)",
-            },
-            {
-                "<leader>xX",
-                "<cmd>Trouble diagnostics toggle filter.buf=0<cr>",
-                desc = "Buffer Diagnostics (Trouble)",
-            },
-            {
-                "<leader>cs",
-                "<cmd>Trouble symbols toggle focus=false<cr>",
-                desc = "Symbols (Trouble)",
-            },
-            {
-                "<leader>cl",
-                "<cmd>Trouble lsp toggle focus=false win.position=right<cr>",
-                desc = "LSP Definitions / references / ... (Trouble)",
-            },
-            {
-                "<leader>xL",
-                "<cmd>Trouble loclist toggle<cr>",
-                desc = "Location List (Trouble)",
-            },
-            {
-                "<leader>xQ",
-                "<cmd>Trouble qflist toggle<cr>",
-                desc = "Quickfix List (Trouble)",
-            },
-        },
-        opts = {}, -- for default options, refer to the configuration section for custom setup.
+        branch = "dev",
     },
 
-
-
     -- lsp
 
     { "Exafunction/codeium.nvim",
@@ -201,6 +177,13 @@ return {
         },
     },
 
+
+    { "neoclide/coc.nvim",
+        branch = "release"
+    },
+
+
+
     { "williamboman/mason.nvim",
         config = function()
             require("mason").setup({})
diff --git a/lua/sevi-kun/set.lua b/lua/sevi-kun/set.lua
index b405344..3bc5860 100644
--- a/lua/sevi-kun/set.lua
+++ b/lua/sevi-kun/set.lua
@@ -14,11 +14,6 @@ vim.opt.smartindent = true
 
 vim.opt.wrap = false
 
-vim.opt.swapfile = false
-vim.opt.backup = false
-vim.opt.undodir = os.getenv("HOME") .. "/.vim/undodir"
-vim.opt.undofile = true
-
 vim.opt.hlsearch = true
 vim.opt.incsearch = true