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