There are a total of 63 coins to collect: 18 on "Sixth Street," 10 on "Brant Street," and potentially 35 at "Lumina Square" and "Ballet Twins Road".
General Tips
How do I start collecting H.I.A coins?
Find Elis at "General Chop's Noodle Shop." He will tell you about "Sage in a Barrel" and give you a quest to find him.

Sage is located near the "141" shop.

After you talk with him, you will be able to start collecting other coins.
What do I do with coins?
You can submit coins to "Sage in a Barrel," who will reward you for them.
- Coins from "Sixth Street" and "Brant Street" can only be submitted to "Sage in a Barrel" located at "Sixth Street"
- Coins from "Lumina Square" and "Ballet Twins Road" can only be submitted to "Sage in a Barrel" located at "Lumina Square"
Why can't I submit last coin to the Sage at "Sixth Street"?
Actually, for some reason, you can only submit 27 coins to him instead of 28.
However, you can still collect a reward for gathering all the coins from "Officer Mewmew", so it's not pointless.
I can't find coins, what should I do?
You might need to re-enter the location for the coin event to spawn.
Also you might try to skip some time. You can do it by doing this:
- Rest (avaliable once per day)
You can rest either on the couch or bed, or by clicking the Date and Time button located at the top left corner of your screen. - Complete comission
If my guide isn't helping you find all the coins, consider talking to "Sage in a Barrel." He can provide hints about most of the coin locations (note that his information is based on ingame time of day).

H.I.A. coins locations
Sixth Street
There are 18 coins in total at this location,
Morning
Coin № 1
You'll receive this coin during completion of the quest needed to unlock "Sage in a Barrel."
To begin, speak with "Elis", he will give you your first coin.

Coin № 2
You can speak to the girl named "Sjal," who stands near the "Noodle Shop". She should give you another coin.

Coin № 3
Talk to the Luo and Phil who are standing near the "Remodeling Shop"

They will flip a coin, and it will land in the empty crate above them, where you can retrieve it.

Coin № 4
Talk to "Mrs. Yani" across the road from the "Remodeling Shop".

She will tell you about the coin and ask that you to inquire about it at the shop where she received it as change.
You need to go to "141" shop and ask "Give Change" Bangboo about it.

Then return to the old lady, she will give this coin to you.
Coin № 5
Just grab the coin from the "Fragrant Plant" right by the window of "Coff-Cafe".

Afternoon
Coin № 6
Talk with the girl named "Lupita" across the road from the "141" shop.

Coin № 7
You can find coin in the "Packing Crate" near the entrance to "Bardic Needle".

Coin № 8
Also you can get coin from "Mr. Panda" near the entrance to "Coff-Cafe".

Coin № 9
Talk to the "Pavol Chuck" near the "141" shop, he will ask you to help with "Sage in a barrel".

Interact with the "Sage".

Then return to the "Pavol Chuck", he will give you another coin.
Coin № 10
Get the coin from "Travis" who is standing right at the entrance to "Random Play".

Coin № 11
At the same location as "Mrs. Yani", you'll find a girl named "Clara". Talk to her; she will ask for your help in taking a photo. After taking the photo, speak with her again. (Hold "F" key and select camera in order to take photo)

Evening
Coin № 12
Talk to the "Hannah", she will ask you to help her get the coffee from vending machine.

Interact with the vending machine, then return to the "Hannah" and talk to her.

Coin № 13
Interact with the "Dumpster" near the "Officer Mewmew".

Coin № 14
Pay for "Roy's" meal in order to get coin from him, you will lose 300 silver.

Coin № 15
Talk with "Jonah", who is standing right at the entrance to "Godfinger".

Coin № 16
Interact with the locker at staff room inside "Random Play".

Night
Coin № 17
Talk to "Gerant" near the car lift, right after "Remodeling Station", he will complain about "Sita".

Go to "Sita", who is standing behind "Howl" (dog inside Newspaper stand, arguably the best character in the game) and talk to her.

Then return to the "Gerant", and receive coin.
Coin № 18
Also there is a coin under "Skateboard Bench", across the road from "141" shop.

Brant Street
Morning
Coin № 19
Talk to the "Kaede".

Then talk to "Cole" who is standing near the blue container.

Finally talk with "Kaede" again and receive the coin.
Coin № 20
Talk to the "Ronnie" near the crates under the far right elevator, she will ask you to take picture of "Kousaka".

"Kousaka" is located further at the top right corner of the map, he will be sitting near the blue toilets. Take picture of him.

Now go back and talk to the "Ronnie".
Coin № 21
Talk to "Becky" near the place where "Kousaka" can be found (coin № 20). She will tell you a very sad story about a vending machine and then give you a coin.

Coin № 22
Talk with the "Luka" who will ne standing at the same place as "Becky" and "Kousaka" (from coin № 20,21). Pay him in order to get the coin.

Afternoon
Coin № 23
Talk to the bear named "Gray," located in the top left corner of the map.

Coin № 24
Talk to the "Ironhead" who is located roughly at he same spot as "Gray" (coin № 23).

Coin № 25
Talk to "Kaidou" (marked with number 1), then talk to the "Pepper" (marked with number 2) and talk again with the "Kaidou".

Evening
Coin № 26
Talk to "Jen"; she will tell you about how she ruined "Kaishu's" life and ask you to talk to him about it.

She is kinda looking at him, so it would be easy to find "Kaishu", talk to him, he will give you a coin.

Coin № 27
Talk to "Yang", he is located behind the construction site.

Then talk to the Bangboo, who is stuck in the pipe in front of "Yang".

Once you help Bangboo, he will appear near the "Yang", you need to talk to him in order to get the coin.

Coin № 28
Roughly at the same spot as previous coin, you can find "Li". He will tell you very strange story about how coin appeared in the "Cement Bag" in front of him, you need to extract the coin, and talk to "Li" again.

Lumina Square [NOT FINISHED YET] (14+8/35)
Morning
Coin № M1
There is a coin in flowerbed near N.E.P.S.

Coin № M2
Talk to "Emmie", who is standing behinnd "Coff-Cafe"

Coin № M3
Check out "Bicycle" near the "Parking Lot".

Coin № M4
Talk to "Granny Leisha" near the spinning statue.

Afternoon
Coin № A1
Talk to the girl standing in front of the entrance of H.I.A.

Coin № A2
Talk to the woman standing near "Officer Mewmew" at the entrance to the "JC Pharmacy".

Coin № A3
Check out the cool "Special Deal" sign located right at the entrance of the "141" shop.

Coin № A4
Inspect strange green thing near sandbox.

Evening
Coin № E1
Talk to the musician at the center of the "Lumina Square", near the strange statue. Somehow he knows you.

Coin № E2
Check the manhole near "Chop Junior's" "Noodle Shop".

Coin № E3
Interact with the tire on the playground near entrance.

Coin № E4
Talk to the girl near the parking lot.

Night
Coin № N1
Talk to this man near the parking lot.

Coin № N2
Get a coin from the vent in the backstreets near "Gravity".

Coin № N3
Talk with the girl in front of the parking lot.

Ballet Twins Road [NOT FINISHED YET]
Morning
Coin № M1
Check out "Takeaway bag" in the lower section of the map, to the left of "The Thinker".

Coin № M2
Check out the "ladder" on the upper section of the map.

Afternoon
Coin № A1
Check "Magazine stand" in the underground section of the map.

Coin № A2
Check "Bench" in the lower section of the map, to the right of "The Thinker".

Coin № A3
Talk to the "Kaibara" in the upper section of the map.

Evening
Coin № E1
Check out the "Telephone" in the upper section of the map.

Coin № E2
Check out the "Vending Machine" in the upper section of the map.

Coin № E3
Check out the "Crate" in the lower section of the map, near the closed passage.

Night
Coin № N1
Talk to "Archie", who is standing behind "The Thinkerer" statue.

Coin № N2
Check out the "Edge of the Platform" behind "The Thinkerer" statue.


