Love Chain: My cute demon bride

To make sure that they will have a flawless plan, Xiao YuYi managed asking the assigned nurse about who was looking after Xiao YuRin at night. Xiao YuYi was able to find out that the assigned nurse were checking Xiao YuRin's condition every four hours. They finally knew when is the best time to sneak into his bedroom. To prevent any suspicion, they plan for Xiao YuYi to visit Xiao YuRin while Xiao XiRan and YuYan are in the living room, then afterwards, she will visit YuYan. Everyone thought that Xiao YuYi's visit to YuYan was to comfort her, but it was for her to start learning how to act as her twin sister. Xiao YuYi made sure that someone must see her going back to her own bedroom. She asked Xiao FengYin to call her from YuYan's bedroom when it is time for her to sleep. Xiao FengYin did not suspect that there's something going on with his three little siblings. As a disciplined son, he knocks on YuYan's bedroom first before going in. The knock on the door is a sign for the three children to act according to their plan. Xiao FengYin shouldn't discover that Xiao YuYi is learning how to act as YuYan. After hearing the sign that Xiao FengYin has come, the three of them immediately climbed up in the bed and stayed in their positions before their big brother comes in. YuYan pretended laying in the bed while Xiao XiRan and Xiao YuYi sit beside her. Once Xiao FengYin comes in, they speak like they were comforting her. For their perfect plan, it becomes useful that Xiao YuYi always wore a different pyjamas than YuYan. She likes a light colour pyjamas while her twin sister loved a darker one. Starting that night, Xiao FengYin always come to pick up his sister to remind her of the time and sent Xiao YuYi on her bedroom before going back to his own room. What Xiao FengYin didn't know was for his three little siblings trying hard not to fall asleep until their meeting time arrives and see each other in the kitchen. At midnight after the nurse's visiting time, Xiao YuYi who pretended to sleep before Xiao FengYin leaves, get out of the bed and changed her pyjamas, the same one with YuYan. When the three little children meets up in the kitchen, Xiao XiRan opened the window and helped YuYan to sneak out while Xiao YuYi looked around to see if someone is coming. By then, YuYan proceed to climb up on the tree next to Xiao YuRin's bedroom. She carefully opened the balcony door and cautiously climb up on his bed. Everything is prepared, something sharp for YuYan to cut her palm and something to clean up the blood. The first night was successful without being discovered. Staring that night, the three children continued to do the same routine and stay up at night until almost two o'clock in the morning before they can sleep. To make their plan more convincing in case someone saw them in the kitchen, Xiao YuYi and Xiao XiRan has to eat something as an excuse. The following days and night were the same. Xiao YuYi's visit to Xiao YuRin and YuYan's bedroom becomes a habit on everyone's eyes. Their plan was perfect, aside from the fact that the three of them started waking up later than they used to which was noticed by Xiao FengYin. "Yi, you woke up late this past few days. Is there something wrong? You used to wake up earlier than me." Xiao FengYin suddenly asked while having a breakfast. Xiao YuYi who just sat on her chair was dumbfounded. She froze right after hearing Xiao FengYin's question. She used to wake up at six, and it's now eight o'clock in the morning.