He built a machine to move anything between worlds — and the only thing that mattered was the person he lost.
Ai Senshi Nicol — literally 'Love Warrior Nicol' — arrived in 1987 as a Japan-only Famicom Disk System exclusive from Konami. Its premise: a fourteen-year-old inventor named Nicol and his girlfriend Stella create a machine that can teleport any object across dimensions. The moment of triumph becomes catastrophe — the Demon Bull King kidnaps Stella to claim the device. Seven Zelda-like stages follow. What the game proposes quietly, in the logic of its design, is that the most dangerous inventions are the ones that make you powerful enough to attract the wrong kind of attention. The FDS format gave Konami the storage to make each stage feel genuinely distinct, with exploration-driven layouts and underground regions hiding items amid lava fields. It never left Japan, and outside of dedicated retro communities it remains almost unknown — which makes it, in a small way, exactly like Nicol's teleporter: a remarkable thing that most of the world never got to touch.
About this game
Released exclusively for the Famicom Disk System in April 1987, Ai Senshi Nicol is a Japan-only Konami action-adventure that places players in a top-down world of exploration and combat. Armed with a sword, the android warrior Nicol must locate three crystals to reassemble a destroyed transporter. The game blends free-roaming exploration with tight combat in a way that anticipated later action-RPGs on the platform.
Key Features
Players roam interconnected areas in a top-down perspective, defeating enemies with sword attacks and locating key items. The three-crystal objective structures the exploration without overly linear progression, allowing players to approach objectives in flexible order.
Gallery
The Story Behind
Ai Senshi Nicol represents Konami's experimental period on the Famicom Disk System, where the medium allowed longer, more exploration-driven games than ROM cartridges could economically support. Its FDS-exclusive release means it never received a wider audience, cementing its status as a collector's curio from Konami's pre-NES-era creative phase.
Tricks & Tales
Ai Senshi Nicol was never released outside Japan and received no cartridge port, making original FDS disks the only way to play it on original hardware. The title 'Love Warrior' reflects the game's story — Nicol fights not for conquest but to restore connection between separated worlds.
Collector's Guide
Region & Compatibility
Japan-exclusive FDS title. No cartridge version or overseas release exists.
Maintenance Tips
The drive belt is the most critical maintenance item. The original rubber belt (approximately 31mm diameter) stretches and eventually fails after decades of storage, preventing the drive from reading disks. Replacement belts are widely available from retro hardware suppliers and require no special tools -- a documented procedure exists in multiple collector guides. After belt replacement, the drive may need alignment, which is a more involved process. The RAM adapter board contains electrolytic capacitors that should be recapped if the unit is used regularly -- leaking capacitors can damage the PCB and corrupt disk reads. Clean the battery compartment with vinegar and a cotton swab if corrosion is present. FDS disks should be stored in their cases away from magnetic sources.
Going deeper
Explore the machine this game ran on, and what to check before you buy or care for one:
What to Watch Out For
Before buying, these are the points worth knowing — from someone who handles original Japanese Ai Senshi Nicol copies regularly.
What hardware do I need to play a Famicom Disk System game?
An FDS game requires three components: a Famicom console, the RAM Adapter (which plugs into the cartridge slot), and the Disk Drive unit (connected to the RAM Adapter). The drive requires its own power supply (six C-cell batteries or an AC adapter). Without both the RAM Adapter and disk drive, FDS disks cannot be played. The Famicom Disk System was sold exclusively in Japan and was never released elsewhere.
Are Famicom Disk System disks and drives still reliable after 35+ years?
Disk reliability varies — the magnetic media can degrade over time. More commonly, the rubber drive belt inside the FDS disk unit degrades with age, causing read errors even on undamaged disks. Belt replacement is the most common and important FDS maintenance repair. If you plan to use FDS games, have the drive belt inspected before use. A working drive with a fresh belt can read original disks reliably.
How does saving work on Famicom Disk System games?
FDS games save directly back to the floppy disk itself — there is no internal battery backup. Data is written to the disk after the save command is given, so the disk can be overwritten. To protect original game data, cover the write-enable notch with tape to make the disk read-only. Many collectors keep one play copy and one archival copy for important titles. Never power off the Famicom during a disk write operation.
Before You Buy
Things worth knowing before you buy Ai Senshi Nicol
A short checklist for buying a used Famicom Disk System disk wisely — useful with any seller, anywhere.
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Choose a seller who tests it before shipping
A copy that has actually been powered on and checked is a known quantity. An untested one is a gamble you only settle after it arrives.
Look for a seller who states it was function-tested and says what they confirmed. A serious seller can tell you exactly what was checked.
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Inspect the disk and its shell
Disk System media is fragile — the magnetic disk can wear, and saves are written back onto the disk itself.
Ask whether it was tested and reads reliably; look for cracks or a warped shell in photos.
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Make sure it fits your console
This is Japanese Famicom Disk System media and requires a Famicom with a working Disk System drive.
Play it on a matching Japanese console or a region-free system, and confirm the listing states the region.
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Mind the drive belt on the console side
Disk System drives commonly need a replacement belt to read reliably — this is a console matter, not the disk.
If reading is unreliable, the console's belt is the usual culprit, not the game.
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Read the seller's reviews and return policy
A 100% positive record across thousands of sales is close to a guarantee — packing, communication and problem-solving all work for everyone. A return policy protects you if something is off.
Read the feedback and confirm a clear return window before you buy.
The last step before buying anywhere is knowing what it's worth.
See the unit we have →Unexpected Discoveries
Games you weren't looking for — but might be glad you found.
Rooms this game lives in
Wander deeper — explore the themed rooms where Ai Senshi Nicol sits alongside its kin.
Memories from around the world
This is a young museum, and this page is still waiting for its first voices. The memories people send reach Taisei personally, and the ones that move him find a home here over time — always with the writer's blessing. Yours could be the very first for this game.
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