Hello,good-bye Walkthrough (Lump of Sugar / NekoNyan)

Nightmare x Vampire Inferno of Retribution

This is a walkthrough for the uncensored English translation of the “Hello,good-bye” visual novel by NekoNyan, available over at Denpasoft, Mangagamer, or Nutaku. It was originally developed by Japanese company Lump of Sugar.

This guide is simply a translation of the original Japanese walkthrough by Seiya-Saiga. So all credit to them. There are 4 main heroines in “Hello,good-bye” (May, Suguri, Natsumi, Koharu).

You’ll need just 2 save slots, and you’ll also unlock all CGs as you go. The game also has a built-in achievement system.


  • After finishing a route and starting a new game the choices will have changed to the same options as behind the continue screen.


  • Save Slot 1
  • Pretend like I know her
  • Save Slot 2
  • I want to get to know Morino

(To reach her again via new game/continue choose: “I remembered the girl I met at the flower field”)


  • Load Slot 2
  • I want to properly graduate from Tenshudo Academy

(To reach her again via new game/continue choose: “I remembered the girl who transferred into my school”)


  • Load Slot 1
  • Be honest and answer her that I don’t know her

(To reach her again via new game/continue choose: “I remembered the girl who started crying the moment we met”)

Koharu (Available after finishing the above)

  • Continue
  • I remembered the girl who was calling me her brother


  • Hello World!
    • Start a new game
  • Hello, good-bye
    • Finish all routes
  • Always Learning
    • Use the in-game Glossary
  • Expert At Work Here
    • Read all the Glossary entries
  • (Page 2)
  • I Don’t Need Your Help, Game!
    • Play the game with help messages turned off
  • That Day, That Time At That Place…
    • Use the log function to jump to lines at least 10 times
  • Uncover The Unseen
    • Hide the text box at least once (right click)
  • Hm, What Should I Pick?
    • Try out all available window resolutions
  • Citizen of Morino
    • Listen to the full speech given at the start of a new game
  • Citizen of Japan
    • Listen to the full speech given during Suguri’s route
  • (Page 3)
  • Nameless Story
    • Listen at least once to the full tune on the title screen
  • 24
    • Achieve 24 hours of playtime
  • A New Start
    • Start a new game after clearing a route
  • Revolution
    • Finish May’s route
  • Tiny ONe
    • Finish Suguri’s route
  • (Page 4)
  • Home And Purpose
    • Finish Natsume’s route
  • The Dwarf in the Flask Saw A Dream
    • Finish Koharu’s route
  • Don’t forget!
    • Unlock the hidden choices (after finishing the first 3 heroines)
  • Gotta Love Auto-mode
    • Play the game after changing auto-mode speed and minimum wait time
  • I’m Out of Save Slots?!
    • Use all save slots
  • (Page 4)
  • Spilling Memories
    • Use the quick save feature at least 10 times
  • Memphistopheles’ Smile
    • Cleared the minigame (See below)
  • Goodnight
    • Obtained all achievements

Minigame (Find Azrael!)

  • At the cross
  • The giant one
  • In a chair on the left
  • Behind the flowers on the right
  • The photo on the desk
  • The sand pattern on the beach
  • Top right of the screen in the top right monitor
  • The middle image on the middle advertisement hanging above
  • Hiding in the front shadow of the flower box in the middle of the screen
  • Upper right corner of the room
  • On the paper in front of the girl on the right
  • Between the 2 trees on the right
  • Between the flowers in the middle/top left of the screen
  • Just right of the open gate right above the closed fence/gate (in the wall)
  • In the second floor window of the building right in front
  • In the shadow of the bridge railing near the lower center/lower right of the screen