Map: i112.photobucket.com/albums/n179/STARMISTRAX/Map.png
Every route were basically the same where you would encounter a female smile, she would block the way with red gems where you'll have to defeat a specific smile in-order to unlock the gems and proceed the chase. The boss location will be block with purple gem where you'll need to go to the related resident's house to unlock the purple gate (except blue where it'll be a smile instead.) Once you were able to defeat all 4 bosses, head back to the hospital and approach the manhole. The metal smile will stop you and respawn all the smile-prop on the map. Take the green smile approach where you need to go through the twin-sisters' house (whom for some reason selling underwear) to make your way into the manhole, and proceed on defeating the metal smile in the mansion on the hill.
The red mage, marked on the map, sells red orc which enables you to use flame magic.
Once you beat the game the cg-merchant will appear in the mansion.
Inside the tunnel at the metal slime area you can find a merchant dressed in lab coat. Holding the 4980 yen item he's selling will enables you to act normally when pregnant.
There's no way to complete the game with 0 rape count, nor there's a reward for doing so. Hence it's recommended to get yourself pregnant for at least once to unlock the AOE system.