This guide details gameplay for Days 21-30 of a game (likely a visual novel with RPG elements). Let's break down the key events and choices, focusing on clarity and concise phrasing.

Days 21-23: Free time (Days 21-22), Day 23 skipped due to plot.

Day 24:

• Exit your room and enter the school.
• In the cafeteria, examine the Giant Refrigerator.
• In the Entrance Hall, initiate an exploration using the Fire Extinguishers.
• Navigate to the first Destination Space (west).
• Optional: Detour east to obtain an Earpick from a Key Item Chest.
• Proceed to the second Destination Space (north).
• Optional: Detour south to obtain a Dragon Illustration from a Key Item Chest.
• Reaching the second Destination Space triggers a time skip.

Day 25: Skipped due to plot.

Day 28:

• Obtain "The Other Academy" trophy/achievement.
• Leave your room and the Rooftop.
• Locate the Gym (1F Hallway, North).

• Meet Nigou, Kyoshika, Yugamu, Kurara, and Nozomi.
• Engage in battle:
  • Utilize team members' abilities strategically (Yugamu on Telepax, Kyoshika on Lagomortar, Kurara for turrets).
  • Prioritize eliminating powerful enemies (Grizzlei, Tubrilla, Darumarr).
  • Use Strategic Materials (Metal Fences) to control enemy movement.

• Debrief: Choose a character (excluding Nozomi) to finish the Commander. Engage in an unwinnable battle against a Strange Enemy Commander.

Day 29:

• Engage in a four-wave battle at the Last Defense Academy.
• Defeat all ground enemies to win. Losing conditions: all allies die or the Barrier Generator is destroyed.
• Enemies include Strange Eggs which hatch into powerful enemies if not defeated quickly.
• Utilize Strategic Materials and team coordination. Prioritize powerful enemies then Darumarr.
• Wave 3 requires surviving three turns while protecting Kurara.
• Defeat the Enemy Commander in Wave 4.

• Debrief: Choose a character to finish the Commander. Teams merge permanently.

Day 30:

• The 1F Metal Shop and 2F Bio Lab open.
• Speak to Nozomi in the cafeteria.
• Explore the Metal Shop (1F Hallway, South, West) and unlock Trap Development by talking to Kurara.
• Explore the Bio Lab (2F Hallway, West) and unlock Enhancement Development.
• Return to your room to end the day.

This revised guide provides a more streamlined and easily digestible summary of the gameplay events. Remember to replace /uploads/... with the correct image paths.

The above is the detailed content of Day 21-30 Walkthrough - The Hundred Line: Last Defense Academy. For more information, please follow other related articles on the PHP Chinese website!