Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Abomination	It's made with love.
Bad Girl	Receive your punishment.
Bound up	Find the helpless Mitsuki.
Cupid of Love	Just doing a Cupid's job.
Good Kitty	Go back to Heaven.
Good Samaritan	"Save" Serra.
Haremly ever after	Achieve the Harem Ending (Secret)
In the Nick of Time	A friend always helps.
Love at the first Sight	Unexpectedly effectful.
Mitsuki	Get Mitsuki's Ending (Secret)
Serra	Get Serra's Ending (Secret)
Sharing a Bed	Give in to puppy eyes.
Shelter from the Storm	Get Serra into your bed.
Stuffed Bear	Finally your aim paid off.
Three's a Crowd	Together in the Ferris Wheel.
Victory	Mitsuki's flawless plan.