Actually it's not Inseo's fault Yi Hyeok's mom left. She was just being over dramatic. I'll let you know-
Spoiler!
So basically, Inseo saw Yi Hyeok's mom act suspicious and he observed. He realized Yi Hyeok's mom liked Inseo's mom the same way he liked Yi Hyeok. He told her about it in the picnic and asked something (I cant remember what TwT) which caused her to panic and eventually leave.
私たちはまだ会っていないことを知っています。でも、今どんなことがあっても大丈夫って知ってほしかった。あなたは私が今まで見た中で最も勇敢で、最も美しい人だから、あきらめないで!たくさんの愛 ！Translate this 💗
