Vols. 1+4 are rip-offs from MangaGo and most of them aren't available anywhere else. If you do have higher quality scans, feel free to upload them/contact staff to replace existing ones. Ta
@deniseuwu123 This will never get updated publicly because the scan group that does it (Harudaki) is very, very private... like Fort Knox private. They've already finished the entire series, according to MangaUpdates (volume 6, ch1-6 + the extra). Unless another public group decides to pick it up or it gets licensed in english, it'll stay unfinished. Unfortunately. You can read the two most recently available public chapters on mangago. Tree Rings part 1 and part 2 (ch 19 and 20 on mangago) from volume 5.