My Big Sister

My Big Sister

27 ratings
100% Walkthrough
By Cece09
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The Marketplace
Talk to both people here

Yummy Noodles
Story Achievement

Use chopsticks on box under pink arrow
Use key on door under smoke
Get the coat hanger from this room
Use the hanger on man hole below
Return the key to the man

Make sure you return it after you use it!
Return the key

Use flashlight on the vent which the arrow is pointing too
A Bad Dream
Go downstairs and out of the house below
Talk to the sister
Get a bobby pin from the bins
Head back upstairs and use it on the other door
To the right of the stairs is the kitchen
Plant the picture on the fridge

Finding Secrets
Find the secret picture

Now head to bed and sleep
Go to the kitchen, then the bathroom above
Leave the house

I would suggest saving here if you want to get all the achievements

Now enter the van
Is This All Real?
There are 2 ways to proceed here with their own achievements, however if you want the 100% you need to follow through with the brain as the doll only gives 1

So 1st pick up the doll from toy box and give it to the therapist
Reload and get the brain instead and give it to the therapist

You chose the doll?
Pick the doll


You chose the brain!
Pick the brain

Leave this room and try to leave the building below
Check out the pamphlets above the sofa

Is that a JIT reference?
Find an easter egg

Enter the toilets above and get the key from the toilet
Because you picked the brain you will talk with your sister

I'm sorry Sombria...
Talk to your sister

You can now leave the building
Taken

She's too innocent to do anything!
Story Achievement

Get the fish from the counter
Inspect the sink

It's just a sink...great.
Examine the sink

Get a red tile from the top right door
Head through the the bottom door
Go to the end of the hallway then down
Under the neon sign in a flashlight
Right in the corner is a flower
Back into the hallway, enter the door next to the save
Try to open the left most locker
Talk to your sister for a bobby pin
Now open this locker
Go back to your sister and enter the door next to her
Get chopsticks from the noodles
Hand the chef the fish and the mask

Asking for help?
Learn about the fish

Go back to the end of hallway, dont go down but instead use your knife on the picture above
You might want to save incase you make a mistake in this next part
Enter and talk to the creature above. You have to give an item based on what they ask for. Useful = Chopsticks. Danger = Flower. Tradition = Fish
Leave this place and head to the final door next to us
Use the red tiles on the picture above pool
Now just follow the path to the end
Escape?
Take the wood and make a bridge of it above
Enter the room
Get magnet on shelf above you
Exit the room and use magnet on pipe above
Use the pipe on the hole next to it
Click the flashing item to combine, then use it on the item
Go back into the room and use cable on the computer
The water is now drained and you can pick up another flashing item below
Use this key on your sister to leave

If you talk to all 4 people in this town you will get an achievement

Talk of the town!
Talk with everyone

Between the 3rd and 4th person you can see some stairs going down by some smoke. You need to go down them.
Here you can pick up an apple
Give this apple to the person sitting down for food
Go back to the save point and down
Open the gate and enter the left building
Now head past the apple man where a path leads up to the bathhouse again
Of Blood and Water
Leave this room and start going right in the hallway.
A face will appear in the wall, if you enter it now you will die. However it did auto save so don't worry about saving first

The Lady On The Wall
Die to the monster

Now make your way to the kitchen
Grab the knife from chef
Go to the locker room and talk to your sister
Use the knife
Go back to the chef
Grab the candy on the side

I want candy!
Story Achievement
The Bus Stop
Take the path up and to the right
We need to collect 5 mushrooms, there are 2 to the left of here. 1 we passed on the crossroad, 1 on the left path and 1 by the bus stop. There is a time limit and an achievement if you fail to collect and feed them to our sister in time. I suggest collecting all 5 mushrooms, saving and letting time run out. You do need to go to your sister to activate the death

I'm so hungry.
Die to your sister

Now actually feed them to the sister.
There is another location at the top of this path
Get yourself some noodles here
We need to go back to the left pathway, where we picked one of the mushrooms
Make sure to hand over the noodles

Noodles will appease the spirit.
Deliver noodles

Now back to the noodle place
Hand over the mushroom to the big guy eating

Mushrooms make you grow bigger!
Story Achievement

Give this leaf to the sister at the bus stop

My neighbor Somboro.
Story Achievement
Cold Rails
Head all the way down and interact with the locked conductor door
Up 2 screens are some beds, enter the room that isn't locked off
Look in the side table
We can now go back down and open the door
Talk to the conductor
Now head all the way back up until you reach the sister
Talk to her for another keycard
Time to go further up the train yet again
Hand over the keycard, finally up one time to exit
Go back to the front and talk to the conductor

You again?!
Story Achievement

Luckily a teleport has opened up as we need to go to luggage
Push the red button here and go up the new ladder

Pressing buttons!
Story Achievement

We can now go back to the bedrooms as they are unlocked.

Well, fourth time's a charm!
Inspect all bedrooms

Finally go back to the conductor and talk to them both
Our Last Stop
Head to the toilets on the right
Get pipe from sink
Go back to previous steps and to the left
Get candy bar from vending machine
Open window next to it with pipe
Use the computer
Head back to the elevators
Use candy on the open one
We can now go through the blocked gate before and go the die path
Go get the sister from the toilets
Now back to our ghost, giving her the doll

The truth finally revealed!
Appease the ghost

Before we take the live path on the right, exit this place and through the yellow police tape

An impostor?
Find your doppelganger

Now we leave
Break or Strengthen
We are at the end game here with multiple achievements. Once you know what to do its fairly simple repeating the steps from chapter select if you don't save at the right time or do certain steps out of place

Get the bobby pin out of the bin again
Save here
Head up to your room and sleep

I...can't stay awake...
Story Achievement

This time don't go inside the bedroom but get the screwdriver from the draws outside it
Head into the bathroom
Open the hatch with that screwdriver and enter
Pick up the shovel to the side
Leave the house
On the right side of this house is a hidden knife to dig up
Save here
Go open the sisters door with the bobby pin

The Loop.
Story Achievement

Now we can use our knife.
Use the knife on the hatch monster
Also use this knife on the old lady
Save here
Open the sisters door

A Mother's heart knows best.
Story Achievement


The last page.
Story Achievement

Now our final 2 endings are together.
Go back to the bathroom
You have to input Ashina into the mirror
Do our final save here
Open sisters door
Leave the hospital so we can smoke
I suggest smoking on the right 1st and the left 2nd
Return to the sisters hospital room

Only eyes can tell the truth.
Story Achievement


Every story has a happy ending!
Story Achievement
3 Comments
mattiejas 1 Feb @ 10:40am 
Minor correction: I had to type "ashina" in small letters. You know you've done it right if you get some red text after typing it into the mirror.
Fru Fru Brigade 5 Nov, 2024 @ 10:52pm 
{Tamamizu} I've only played the remaster all the way through. Are there slightly different versions of the "normal" good ending depending on whether or not you took the heart, like in that version? I'd assume so, but I don't really know
Naia 24 Jun, 2023 @ 2:58am 
Thanks. Simple and easy to follow guide.