August 22nd - 31st: Continue exploring the Secret Laboratory. This dungeon is long and has several floors. Make sure your party is well-leveled (around level 50-55) and equipped with the best gear you can afford. Fuse powerful Personas with good elemental coverage and healing/support skills. save frequently and use Goho-M to exit the dungeon if you're running low on resources.
September 1st: If you've reached the top floor, you'll face the dungeon boss.
Boss: Shadow Naoto
- Weakness: None.
- Resistances: None.
- Strategy: Shadow Naoto is a formidable opponent. She has two phases. In the first phase, she will use various elemental attacks and can inflict status ailments like 'Poison' and 'Fear'. She also has a skill called 'Galgalim Eyes' which can instantly kill a party member if they are afflicted with Fear. Prioritize removing Fear with items or skills. In the second phase, she will use 'Mute Ray' to silence your party members, preventing them from using skills. She also has powerful Almighty attacks. Focus on strong physical attacks and your best elemental spells. Use buffs (Tarukaja, Rakukaja) and debuffs (Tarunda, Rakunda) to gain an advantage. Keep your HP high and be prepared for a long fight.
After defeating Shadow Naoto, he will awaken his Persona, Sukuna-Hikona, and join your party. You'll unlock the 'Fortune' Social Link (Naoto).