Play a stage with a beehive. Note: The first stage has two of them. Lure enemies and innocents near a beehive with either a poison rice or a magazine (Tesshu). Then, hit the beehive with either a shuriken or a throwing needle and watch the bees take care of them. You will not lose any Kanji when the bee's kill an innocent, nor will you gain any as a stealth kill. This helps take care of groups of enemies, as the bees attack multiple targets at once. You can re-hit the hive to have them finish the job. Note: If you are too close to the hive or are the only one in the vicinity, the bees will attack you.

Take a few low-damage range weapon with you, such as throwing stars, or pick up bows and arrows from the guards, and bring along some poison rice. Generally two arrows or stars will be just enough to bring an innocent person's health down to the point where the rice can finish the job. However, sometimes these two stars or arrows will just be enough to kill them; you will have to experiment with the damage they do at different ranges. However, you have to throw the rice last, as they only eat a poison rice ball once.