Successfully complete the game to unlock models for Potami (Potaru) Shimiya, Dejiko, Super Sonico, Taiyo Tenkawa and Susanna Hopkins. Note: Their outfits and Sonico's weapon can be bought at the "5days" shop.
Complete the indicated task to unlock the corresponding bonus.
Complete the indicated task to unlock the corresponding bonus. Note: If any of the DLC has been installed, you can change character models earlier than by completing the game. To change the models of the male characters (Kaito, Yuto, Pops, Zenya, Sakaguchi and Soga), you must complete all four routes.
Complete the "Look But Don't Touch" side quest to gain the ability to wear woman's clothing. To start the mission, go to "Radio Kaikan Area" and speak with the schoolgirl standing directly in front of the large SEGA shop. Follow her quest instructions. Her mission is easy, and is only has a two star rating. You will also be rewarded with ¥10,000.
Flyers are distributed by Shop Assistants in most of the areas. There is one in each area, not including "MOGRA", "Battle Arena", or "Shrine". The locations of the Assistants are static. Their names are purple. Each of them will give you one of the 135 total flyers. You must speak with them multiple times as you progress, as they will only give you a flyer after every few story missions. To find out if new flyers are available, leave MOGRA and check if the Shop Assistant in the connected area has a new flyer. If she does, check all locations for new flyers. This will require the storyline to be completed a few times. The amount of flyers you collected will carry over to your next playthrough
You must execute a counterattack 100 times. Counterattacks are activated by going into a defense position and waiting for an enemy to attack. Immediately after the enemy is done with his attack, attack them. A sound will indicate a successful counterattack. Each counterattack qualifies as one connected hit. Your progress will continue in New Game+ mode.
You will be able to upgrade your weapons and clothing early in the main storyline. Upgrade one piece of equipment to 999. To increase the level of your items, combine them with other items with as much strengths as possible. Sell all items with stats below 10 and purchase weapons such as laptops for it. You then use those items to upgrade the equipment you want to get to 999.
The little sister ending is a small bonus clip at the end of the game, and can be combined with all the other possible endings. To get it, complete all the hidden side quests and your sister will give you ad MOGRA. Check your email after every main mission. Your sister will send a message as soon as she has a quest available. There are a total of five sister quests and one pops quest offered through email. They will not appear on the "Side quest" screen. The emails have the following subjects.
Execute the Unison Strip with Shizuku, Rin, Tohko, Shion, Lati and Nana. The Unison Strip is a super move you can perform with your partner when the gauge at the top left is full. To fill it, fight enemies. Consider completing a few side missions to fill it up. To get one of the required partners to follow you, visit MOGRA and talk to them. Not every partner will be available at any given time. Their availability is dependent on how far you have progressed in the main storyline. You will unlock the Unison move after completing the "Train at the Battle Arena" main quest.