Here is the full list of all 24 Sumire achievements.
Finish the game.
Finish the whole list with high karma.
Catch a fish at the red bridge.
Find all the scattered coins.
Buy tea from Teaman.
Take the last bus of the day.
Beat Kenji and Bo at their own games.
Send a letter to someone special.
Make it out of the Tanaka House.
Get into town in the morning.
Make a wish at the shrine.
Cross the Cold Stream.
Just leave the house!
Help the turtle achieve his goal.
Complete tasks for all creatures and people.
Lie to someone, help the rabbit cheat, steal some money.
Finish the day without helping any people.
Finish the day with super low karma.
Finish the game with the most minimal number of Fast Travels.
Get all 5 gachapon from the gachapon machine.
Refuse Kenji's kiss.
Someone lost and something found.
Return to the shrine after lunch and make a special wish.
Get all of the achievements.