Miu is a star system located on the space lane between Tatiana and Jiyuu System. It is part of the Yamatai Star Empire. It has one habitable planet, Miu I.

Miu was originally colonized in YE 28 under the control of the Fifth Expeditionary Fleet and protection until YE 29 when the Mishhuvurthyar conquered the Bard Cluster. It was then under the control of the Mishhuvurthyar until their defeat in YE 30.

After the Mishhuvurthyar were driven off the system was once again under the control of the Yamatai Star Empire . The system was under the control of the Fourth Fleet, and it was re-colonized primarily by former Yamatai Star Empire soldiers. It was named after the Taisho Shimizu-Motoyoshi Akina (清水本吉明菜)'s daughter Shimizu-Motoyoshi Miu.

In YE 32 the colony was abandoned when the NMX forced the Fourth Fleet to have to consolidate its holdings after losing a major portion of their fleet in two engagements. Prior to abandoning it the Fourth Fleet damaged all structures and equipment so they could not be used by the enemy.

In YE 35 the Scientific Studies Service (SSS) deployed a Ke-P6-01a Bisen Lighthouse on the surface of the planet at the request of the Star Army of Yamatai.

In YE 36, Miu was restored to the list of planets claimed by Yamatai because of its position on the path to Jiyuu and the Outer Colonies, following the signing of the Defense Arrangement Treaty (of the) Alliance of Signatory States.

In YE 41, mercenaries working for the Interstellar Kingdom Of Kuvexia killed all Yamataian forces in this star system, as part of the Kuvexian Invasion of YE 41 during the Kuvexian War. The attacked current during the Year-End Holidays¹⁾.

• Type: M3 V Red Dwarf
• Radius: 2.94 x 10⁵ km (0.42 x sol)
• Mass: 7.03 x 10²⁹ kg (0.35 x sol)
• Temperature: 2900 K
• Luminosity: 1.19 x 10²⁵ W (0.03 x sol)

Presented below is some scientific data for the planet Miu I.

• Type: Standard iron/silicate
• Radius: 5304.40 km (0.83 x earth)
• Surface Area: 3.54 x 10⁸ km²
• Land Area: 3.50 x 10⁸ km² (2.35 x earth)
• Mass: 3.63 x 10²⁴ kg (0.61 x earth)
• Density: 5.80 g/cm³ (1.05 x earth)
• Composition: 43.9% iron, 29.0% oxygen, 12.9% aluminum, 12.1% silicon, 1.6% other metals, 0.6% other elements

• Gravity: 8.56 m/s² (0.88 x earth)
• Escape Velocity: 9.53 km/s

• Period: 25.89 hours
• Axis Tilt: 34.42 °

• Water: 2 %
• Ice: 13 %

• Type: Standard breathable
• Pressure: 94.58 kPa (0.93 x earth)
• Composition: 63.2% argon, 21.5% nitrogen, 11.8% oxygen, 3.5% carbon dioxide, trace other gases

• Type: Cool
• Min Temp: 201 K (-71 °C, -95.8 °F)
• Avg Temp: 296 K (23 °C, 73.4 °F)
• Max Temp: 352 K (79 °C, 174.2 °F)

• Features: Planetary rings

The planet has a comfortable average temperature but depending on location and season, can be very cold or hot. It atmosphere is 3.5% Carbon dioxide, which may medical issues especially after a week of exposure, so a filter mask is recommended. Effects of breathing the planet's atmosphere on humans include flushed skin, rapid respiration, higher pulse and blood pressure, and mild narcosis (passing out). The body can adjust some over time, becoming less sensitive to the CO₂.

The Star Army of Yamatai built a fort here called Fort Jal, named after Taisho Araiah Jal.