chap 6: Underground wave

1 chap 1: In Quiet Peace 

2 chap 2: Sneaky relationship 

3 chap 3: Difficult decisions 

4 chap 4: The appearance of Anna 

5 chap 5: The fateful encounter 

6 chap 6: Underground wave 

7 chap 7: Sweet Trap Feeling 

8 chap 8: When a person disappears... 

9 chap 9: The choice of the heart 

10 chap 10: Love finds itself 

11 Chap 11: Preparing to face danger 

12 Chap 12: The Past Returns 

13 chap 13: Danger warning 

14 Chap 14: Darkness follows 

15 Chap 15: No more going back 

16 Chap 16: Wire Rope Mounting 

17 Chap 17: Peace before the thunderstorm 

18 Chap 18: Together in peace 

19 Chap 19: Close Breaths 

20 Chap 20: Sweet Zest Spots (H+) 

21 Chap 21: The consequences are as sweet as quite bitter... 

22 Chap 22: The Dark Side of Light 

23 Chap 23: Blood and the Past 

24 Chap 24: When the darkness swallows the light 

25 Chap 25: The Past Rises 

26 DROP!! 

27 chap 26+27: Breath of Darkness 

28 Chap 28: Before the storm 

29 Chap 29: The Last Night Before Death 

30 Chap 30: Black Shadow Transforms 

31 Chap 31: The storm is back...? 

32 Chap 32: Cuts in the heart 

33 Chap 33: The Final Plan [End] 

34 [Ngoại Truyện Thứ Nhất: Trước Khi Mọi Thứ Sụp Đổ] 

35 [Ngoại Truyện Thứ Hai: Ký Ức Của Một Enigma (Ký ức của 4nh)] 

36 [Ngoại Truyện Thứ Ba: Nỗi Đau Của Một Alpha (ký ức của Diepz)] 