Hearts Soldier/Carroll in Wonderland

Hearts Soldier (ハートアーミー Hāto āmī) is a minor character in Carroll in Wonderland.

Day 1
Hearts Soldier is in the right waiting room from 13:00 to 15:30.

Day 2
Hearts Soldier is in the Entrance during the morning (7:00-11:59), and in the right waiting room from 12:00 to 18:59.

Day 3
Hearts Soldier is in the Entrance during the early afternoon (12:00-15:59). From 16:00 to 17:59 she is in the right waiting room talking to Spades Soldier. She is in the Communal Bath after 18:00, along with the other card soldiers.

Sidequest
Hearts Soldier has a sidequest where she asks you to help her find a certain mushroom, though the condition for this sidequest is unknown. Accepting this brings you to an area of Edible Forest (one of only two ways to leave the castle in this game). All of the mushrooms in the area can be examined, causing Hearts Soldier to give various responses. The mushroom she wants can be found in the southwest of the area, next to the open window, and examining it finishes the sidequest and sends you back to the castle. Both going to Edible Forest and back take half an hour.

Completing this sidequest gives the achievement "My Favorite Mushroom Sex Toy".

H-scenes
Hearts Soldier has two H-scenes, both reusing artwork from Succubus in Wonderland:

The first is a breastfeeding handjob, which can be obtained by talking to her and picking "Ask to be embraced" twice. This gives the achievement "The Milk is Sweeter than the Tart".

The second is a group scene with the other card soldiers, which can be obtained by going into the Communal Bath after 18:00 on Day 3. This gives the achievement "BADEND3: Hero Soaked in Milk".