Theme

Energy Saving

In the Sustainable Challenge, you can earn colored gem berries (jewel-colored berries) for each theme. If you collect gem berries, you can exchange them for special benefits and gifts.
Clear each chapter within the theme and collect gem berries of various colors!
Name Gem color Bright color Berry-earning articles Birth month
amethyst
amethyst
#8c52ff
#cfb9fa
2
aquamarine
aquamarine
#26bde2
#7cd8ed
3 Other ways to save water in your daily life [aquamarine]
3. Laundry [aquamarine]
3 How water is used at home [aquamarine]
 3
emerald
emerald
#3f7e44
#6db571
3. Choose eco-friendly transportation [emerald]
3. Health benefits [emerald]
4. The benefits of eco-driving [emerald]
2. Warm water washing toilet seat, hot water supply, bath [emerald]
2. Refrigerator [emerald]
3. Lighting [emerald]
2. Air conditioning [emerald]
 5
garnet
garnet
#c5192d
#e95868
1
lapislazuli
lapislazuli
#19486a
#2c7eb8
3. Substitutes [lapislazuli]
3. Recycle [lapislazuli]
4. Impact on global warming [lapislazuli]
 12
morganite
morganite
#dd1367
#f1649f
4
pearl
pearl
#dda63a
#ebca8e
3. Recycle your clothes as a resource [pearl]
2. International Certification [pearl]
1. Take a closer look at how it's made [pearl]
3. Think ahead when you buy [pearl]
2. Enjoy fashion through reuse [pearl]
1. Take good care of the clothes you own and wear them for a long time [pearl]
3. Clothes that are incinerated and landfilled [pearl]
2. Mass Waste Problem [pearl]
1. Fashion and the Environmental Impact [pearl]
 6
peridot
peridot
#56c02b
#92de71
8
ruby
ruby
#a21942
#e03c6e
3 Using an AED in an emergency [ruby]
1 What is an AED? [ruby]
4 Heatstroke [ruby]
2 How to use an AED [ruby]
3 How to improve sleep quality? [ruby]
2 What you can do for early detection and prevention [ruby]
3 What you can do to prevent dementia [ruby]
3 Things you can do to prevent diabetes [ruby]
 7
sapphire
sapphire
#00689d
#00aaff
Checkpoint III [sapphire]
5. Power restoration [sapphire]
Checkpoint II [sapphire]
Damage to telephones and elevators [sapphire]
 9
topaz
topaz
#bf8b2e
#ddb673
4 What if the light bulb is out? [topaz]
3 Tips for using delivery boxes effectively [topaz]
2. Manners in common areas such as hallways [topaz]
1. Smoking etiquette [topaz]
 11
tourmaline
tourmaline
#4c9f38
#82cb70
3 Review of consumption behavior [tourmaline]
3. Four Crises to Biodiversity in Japan② [tourmaline]
3. The blessings of biodiversity [tourmaline]
 10

Environment

Initiatives to reduce environmental impact

Social

Contribution to society and community

Governance

Collaboration with stakeholders