[prashant]

# Cheat mode

At the title screen, quickly press R3, L3, R2, L2, R1, L1, Square, Triangle, Circle, X, R3, L3, R2, L2, R1, L1, Square, Triangle, Circle, X to unlock all bonuses.
# Alternate costumes

Have a saved game file from The Oanechan Bara to start with Saki's, and all of Aya's original five costumes unlocked.
# Aya's original costume 1

Successfully complete five Quest mode quests in Story mode to unlock Aya's original costume 1.
# Aya's original costume 2

Successfully complete six Quest mode quests in Story mode to unlock Aya's original costume 2.
# Aya's original costume 3

Successfully complete seven Quest mode quests in Story mode to unlock Aya's original costume 3.
# Aya's original costume 4

Successfully complete eight Quest mode quests in Story mode to unlock Aya's original costume 4.
# Aya's original costume 5

Successfully complete nine Quest mode quests in Story mode to unlock Aya's original costume 5.
# Aya 2

Successfully complete two Quest mode quests in Story mode to unlock Aya 2.
# Makoto

Successfully complete level 6 in Story mode as Riho to unlock Makoto.
# Makoto 2

Successfully completely fill the "????" gauge to unlock Makoto 2.
# Riho (17)

Successfully complete ten Quest mode quests in Story mode to unlock Riho (17).
# Saki

Successfully complete level 6 in Story mode as Aya to unlock Saki.
# Saki 2

Successfully complete three Quest mode quests in Story mode to unlock Saki 2.
# Saki's original costume

Successfully complete four Quest mode quests in Story mode to unlock Saki's original costume.
# Hard mode

Successfully complete level 6 in Story mode on the normal difficulty setting to unlock the hard difficulty setting.
# Violent mode

Successfully complete level 6 in Story mode on the hard difficulty setting to unlock the violent difficulty setting.
# Wallpaper 1

Successfully complete one Quest mode quest in Story mode. Then, press L1, L2, R1, or R2 at the mode selection screen to switch to the new wallpaper.
# Wallpaper 2

Successfully complete level 6 in Story mode on the hard difficulty setting. Then, press L1, L2, R1, or R2 at the mode selection screen to switch to the new wallpaper.
# Wallpaper 3

Successfully complete level 6 in Story mode on the violent difficulty setting. Then, press L1, L2, R1, or R2 at the mode selection screen to switch to the new wallpaper.