To achieve the good ending, you need to finish the game once first and then start a new game.

Don't Look Inside The Oven

While playing the mobile game, don't look inside the oven for Mita's hairbrush. Skip to kitchen and click on the drawer under the fridge.

I Love You

While picking up the fourth battery from the fridge, the "I Love You" will fall on the ground. Pick them up and place them on the refrigerator.

Don't look Inside The Vent

When Mita asks you to bring her the scissors from bathroom, don't look inside the vent.

Take The Sauce

After bringing scissors to Mita in the kitchen, she will ask you to sit down and try the sauce. Select "Take The Sauce".

Play A Game with Mita

After finding Mita in the kitchen go to living room and play a console game with her in front of TV.

Stay

After playing a console game with Mita, go to the bedroom and play the cards game. Few rounds later, go to wardrobe and when Mita asks if you want to Stay or Refuse, choose Stay.