Slayers 2: How to Get the Firstlight Tanto Schematic in Iceveil Valley

In Slayers 2, the Firstlight Tanto ranks among the strongest slayer weapons. Its schematic lies beneath the snow in Iceveil Valley, but reaching it requires a brief night quest completed in the right order. Along the way, you also earn the Legendary Mushroom Lit Lantern—the game’s sole light source that exposes the path to the dig site. The mushrooms, footprints, and chest remain inactive if you do any part out of sequence.

Quick answer: Finish Shiro’s supply quest, purchase the Shovel, and visit Old Trapper Retsu at night with 2,500 Wen. Remove all lanterns, illuminate the eight cave mushrooms, and dig at the endpoint of the blue footprints.

What the Firstlight Tanto chain rewards

This route rewards you with two items. First comes the Mushroom Lit Lantern, whose movement speed and stamina regen make it useful well beyond the quest. The Firstlight Tanto is the final prize; its high additional damage and substantial stamina boost place it among the best weapons.

Mushroom Lit Lantern (Legendary)	Value
Illumination	+0.45
Max Health	+20
Max Stamina	+15
Movement Speed Factor	1.05x
Stamina Regen Speed	1.07x

Firstlight Tanto (Mythic)	Value
Additional Damage	+5.75
Additional Damage Factor	1.15x
Block Points	+8.3
Block Regen	2.36x
Max Stamina	+45

The block regen multiplier keeps the tanto usable in long fights where you spend a lot of time guarding, while the +45 Max Stamina supports extended skill chains.

Requirements before you start

Four conditions gate the entire sequence. If even one is missing, nothing in the cave triggers.

A Shovel in your inventory, sold only after Shiro’s Iceveil supply quest.
In-game night, since Old Trapper Retsu appears only after dark.
At least 2,500 Wen to pay Retsu for the cave clue.
Every lantern and light source unequipped for your first cave visit.

Iceveil Valley deals cold damage without protection. The Emberheart Lantern grants cold immunity and recharges at campfires, but you cannot have it equipped during the mushroom step, so campfires along the path are your main way to survive.

V2 Weapon Unlock Overview — The whole chain runs after dark, so plan to reach Retsu and the cave during in-game night. Shown at 00:06 in DaboSenpai’s video. Image: Ouw Productions

Get the Shovel from Shiro’s supply quest

Even if you already know the location, you cannot open the buried chest without equipping the Shovel. Get that sorted before proceeding.

Collect nine Cooked Meat by running Lucy’s quest near Beginner Village. It’s the fastest option and takes you toward the Mother Bear area. You receive three Cooked Meat per completion, meaning three runs will cover the total.

At the entrance to Iceveil Village, talk to Iceveil Guard Shiro and take his supply quest. Then put all nine Cooked Meat in the Gate Stores cart behind him.

Step 2: Shiro's Supply Quest — Shiro sits at the Iceveil Village entrance and starts the supply quest that unlocks the Shovel shop. Shown at 00:32 in Roblofix’s video. Image: Ouw Productions

The order also calls for 25 Health Elixirs. Buy them from Alchemist Meku in Mistfall Harbor using Wen and Demon Horns; having buying power for about 50 Demon Horns gives you a comfortable buffer. Put the elixirs in that same cart.

Finish Shiro’s quest to open the village gates, then enter the Winter Store and buy the Shovel from Winter Store Rep Lynx for 1,000 Wen.

Pay Old Trapper Retsu at night

Do the remaining parts at night. If you get there during the day, talking to Retsu won’t advance anything; wait for night at a campfire.

When night falls, head south from the Mother Bear area into Iceveil Valley. Near the valley entrance, Old Trapper Retsu sits at the foot of the red torii gate.

Talk to Retsu and select “Lantern on your belt”. Keep going through the conversation until he requests payment. Pay the 2,500 Wen to hear the cave clues: he directs you southeast, then uphill toward the entrance.

Before continuing, go into your inventory and remove every lantern and other light source you have equipped. This concealed condition activates the next step; overlook it and the trip is wasted.

Light the mushrooms and grab the Mushroom Lit Lantern

The cave is the same one that holds Reaper Trainee Kuzan. With no lantern equipped, the darkness and cold drain health fast, so lean on the campfire along the route or carry regeneration items.

Step 6: Enter the Cave — The mushroom cave entrance in Iceveil Valley — enter it with no lantern equipped. Shown at 01:00 in Roblofix’s video. Image: Ouw Productions

Inside, step or jump on every glowing blue mushroom scattered across the stone platforms and raised ledges. There are eight in total, all of which must be triggered.

Check the mushrooms for a visible reduction in glow to verify activation. A particle burst isn’t reliable proof: particles may appear without the mushroom properly activating, making the effect easy to mistake.

Keep moving between mushrooms, since the glow resets after too long and pauses or backtracking can cancel earlier activations. If the final mushroom produces nothing, repeat the route; it may take two or three attempts.

If the lantern won’t appear, leave and rejoin the server, then do the route again. This refreshes the cave and changes the time of day as well, so make sure night has returned before heading to the mushrooms.

Head to the rear of the cave and pick up the Mushroom Lit Lantern from the floor, then open your inventory and equip it. This time the lantern should stay active.

Follow the footprints and dig up the schematic

Re-enter the same cave with the Mushroom Lit Lantern equipped. Glowing blue footprints now appear across the ground, and they only show while that specific lantern is active.

Follow the prints from the cave across the snow to their endpoint on a raised snowy mound. The dig location is at the final print, so follow the whole trail instead of taking a shortcut.

Equip the Shovel and dig the mound. A hidden Snow Chest appears; open it to claim the Firstlight Tanto Schematic along with extra loot inside.

Serpent Schematic Cave and Chest — The buried chest at the end of the footprint trail, opened with the Shovel for the schematic. Shown at 04:56 in DaboSenpai’s video. Image: Ouw Productions

The Archives menu verifies the unlock once the Mythic-tier schematic is in your inventory: the Firstlight Tanto entry becomes readable, with its complete stat block and description.

Farm the Firstlight crafting materials

Getting the schematic unlocks the weapon but doesn’t give you the completed blade. Crafting requires Firstlight materials, among them Firstlight Weaver’s Silk, available through two repeatable sources. A patch lowered the material requirements, shortening the grind compared with launch.

Source	Base material chance	Cost or notes
World bosses and World Chests	3%	Rotate bosses across regions
Ouwigahara dungeon end chests	5%	30,000 points per run

World boss rotation

For a straightforward farming loop, defeat Yahari and Reaper at Bamboo Grove, go over the bridge to Sumari, and continue to the Wilderness for Water Breaker Hashira Giyen and Wind Slayer Saneri. Each boss drops a World Events Chest as well as its usual loot. By the time you finish the circuit, the first boss has respawned.

Method 1: Boss Farming Overview — The bridge crossing on the boss circuit between the Bamboo Grove and Sumari fights. Shown at 01:15 in tana’s video. Image: Ouw Productions

Look beside each chest before moving on, since standard drops appear on the ground. Coin Pouches and Metal Scraps are common filler drops from the Bamboo Grove bosses. Drop odds are identical at every location, so plan for the shortest travel time rather than the highest kill count.

World Boss Map Overview — Boss markers span Bamboo Grove, the Wilderness, and Windy Peak, plus a Black Marketeer marker. Shown at 06:00 in tana’s video. Image: Ouw Productions

Ouwigahara dungeon runs

For a higher drop percentage, run a dungeon. Enter at the gate beside the Queue Area in Ouwigahara, complete the run, then spend 30,000 points to open the end chest; its material drop chance is 5%.

Loading into Ouwland — Loading into the Ouwigahara area, where dungeon end chests hold the higher material chance. Shown at 00:31 in MySpaceGuide’s video. Image: Ouw Productions

Both 2x and 4x boosts increase boss loot and dungeon end-chest drop rates. Grab one from the shop before you begin farming, not partway through the session.

Redeemable codes such as RELEASE26, EVIL4RTSPINS, and POINTSRESET rotate in and out of the game, and active ones can supply spins or points that speed up the grind. Enter them in the in-game Codes menu while they are still valid.

Codes Menu — The Codes menu, where active reward codes can be redeemed for spins and points. Shown at 00:13 in MySpaceGuide’s video. Image: Ouw Productions

After banking the schematic, progress depends on how quickly materials drop at your chosen pace. For now, equip the Mushroom Lit Lantern to benefit from its speed and stamina regeneration. While sweeping Iceveil Valley, find the Firstlight Spear Schematic in an icy cavern; dive near the submerged statue at Douma’s spawn point to reach it.