Original source 
Summary ( 20- Shall we ?)
- “Have you put on weight” exclaimed Cheol while Ji Ah was munching on the macaroons he bought.
- Ji Ah was red-faced and demanded an explanation.
- He wasn’t talking about her, but about Chwi, their cat.
- Apparently Ji Ah was secretly giving the cat some treats while Cheol was away at work.
- Worried that she herself had gained, she weighed herself and but nothing really shocked her.
- Out of excitement, she tried all her outfits.
- Happy that they still fit, she twists and turns but suddenly hears a sound of tearing.
- “Can you please help me train?” Ji Ah begs Cheol.
- She wants to lose weight.
- 살찌다 : grow fat, to get fat, to put on weight
- 방금 : moment ago, now
- 거참 : Oh dear!, (Oh) Dear me!, Good gracious!, Crikey!
- 묵직하다 : be heavy
- 추운 지방 : a cold area[country]
- 겨울잠 : hibernation
- 실내 온도 : indoor temperature
- 간식 :snack
- 사료량 : numbers of feeding rounds
- 체중계:bathroom scale
- 염치없다 : impudent, shameless
- 등록하다 :register, enroll
- 어지간히: tolerably, passably
Yall I am also learning Korean, so bear with me regarding the translations. I am translating as I understand and not literally.
* Not 100% sure of this sentence’s translation.