1st Mission: Showgirl at the drugstore (I think that place is a drugstore).
Area C - go to the cosplay store and buy the maid or the bunnygirl. Got to the "drugstore" and talk to the right-side clerk. After the display of "whatever", the otakus are going for you, avoid them or get caught (rape, but no game-over), just go for the exit and mission will be complete.
2nd Mission: Get comics at comic store.
AREA D: Got to the comic store and search for 3 items at the shelves. They are localized at the bottom-right, top right, and second to top-left (just click at them until you find them). After getting them, go for the clerk and mission will be complete. Otakus are going to try to get you (once again, rape, but no game-over).
3rd Mission: Get the "Keys" to clear the police blockades.
All aroud areas A, B, C, D: the items are localized inside boxes in all these areas (5 keys in total). By math, 3 of those places have 1 key each and one of those places have 2 keys (I think area B - might be wrong).
Area A - north alley, close to the trees and timer.
Area C - north-west, close to a maid (in front of buildings).
I can't precise exactly where all of them are now (they're not inside the shops); just slow down time and search around (4th option in menu, top choice - [5] totemo osoi).
After getting them, click on all of the bottom blockades at area C and D to complete mission. Areas E and F will be acessable, now.
4th Mission: Get Bomb parts.
Areas C, E and F: assemble the bomb's components.
Area E - north middle alley, there will be an otaku next to a vending machine. Either give him 10.000 or the rare comic (reward from 2nd Mission).
Area F - Bottom left alley, lower box.
Area C - drugstore, talk to the clerk next to box, buy item.
Talk to the girls (especially to Shizuna - police officer). She will be waiting in area B, 2nd floor, right side. Talk to her, and mission will be cleared.
Best End
Tips:
1 - Fast foward time when waiting for calls.
2 - During missions or moving around to other areas, slow down time.
3 - Keep calling the other girls (around every 30 secs). Whenever they answer, they will tell their current location. Move towards it.
+ 1st - Saki (blonde girl); 2nd - Shizuna (police officer); 3rd - Rika (athlete).
3.1 - Saki will be the 1st to call to you. She will be in Area C. Talk to her next to the Otaku and agree with her (top choice). This will allow you to protitute yourself (Sena - heroine name) to the otakus (for money, of course). ATTENTION - for good end, after this 1st event, never agree with her (go for lower choice). Otherwise, she will betray your team (she has a machiavellian personality). She will call you eventually, meet her at the place she is, but once again, say no.
3.2 - Shizuna is trustworthy. After the 4th mission (bomb), at area E, she will tell you about a memory disk. Get yourself a maid outfit and go for the maid cafe. With the help of Saki, you will get the memory disk.
3.3 - Call her. Rika will be at 1st time at area A, north, close to the trees and timer. After that, call her again another time. Go back to that same area and talk to her (protect her from the otakus). After Mission 4, she will be in Area F and give sneakers (speed boast).
PS: just to avoid any problems, call all of them every 30 secs.
+ Buy the bunnygirl outfit. Makes you fast.
Mission 5: Get to the timer.
The timer will probably broke, freezing time at 00:01. If everything went right, call the girls, go to 2nd floor at area B, talk to them. Go to area E, lower vending machine, buy the 3 top items. Go back to area B, talk to all of them. Go for the area and go for the timer. If any of the agents touch you, the other girls will stop them (just 3 of them). If you need, buy stun guns at the shop at Area F. Avoid all the agent and click at the timer. If everything went right, mission clear.
If any of the other girls got raped during the game, they will be off, so as her cell phone.