Captain: "We captured the Black Ship with the low cost of 1 Medium Bune! Good work, everyone!"

Goemon: "Every ship was hit by cannon balls at some point..."
Chisato:

"Iga Ninjutsu is Good! Endurance overcome might!"
Video of Black Ship battle. Enjoy!
Sawada Takamochi: "Haha! Thanks to the Blackship's reputation, we encountered no Honma navy - the Fourth army lands on Sado Island! Assault the castle!"
Chisato: "Report! We have discovered Honma's samurai army!"
Hattori Yasunaga: "Revenge time!

Torture it until I come!"
Chisato: "No problem!"
Hattori navy captain: "Wahaha... let the Blackship teaches Honma who is the real boss!"
Hattori Yasunaga: "Where is Honma's army now?"
Chisato: "They are trapped by us in Fukushima! Waiting for your army!"
Yasunaga: "Saving their daimyo for me! I will face him personally on the battlefield!"

Chisato: "Yes! How about his sons?"
Yasunaga: "But his sons will suffer the same fate as my son!"

Chisato: "Yes!"
Hattori Masanari: "Father, I... I met this wonderful prudent girl on Awaji Island. If I marry her, she will certainly save a lot of koku for Hattori."
Yasunaga: "Bah, we are so rich anyway. Plus she will find any reason to reduce your men's salary and year-end bonus. That's not good for leadership. Find another girl!"
Masanari: "So we have to break up?

"
Hattori Bandits: "Yeah! Let's burn down Shimotsuke and look for cute girls!"

Bow Warrior Monks: "Why do we have to fight with them..."
Hattori Yasunaga: "I am here in Fukushima! Is Honma's army ready for the last battle?"
Chisato: "Yes, my lord! Their daimyo is reserved for you!"
Yasunaga: "Sodiers, one last march to battle!"
End of Chapter 15
Chapter 16. Revenge of Iga Ninjutsu
Hattori Yasunaga: "Honma! Let's meet face to face on the battlefield and decide who is the best of Japan!"

Chisato & Goemon:
Note: The screenshot had "Night Battle" option checked, but the battle is carried out on the day time due to our superior ranged strength.
Chisato: "My lord, what is your plan of battle? Night assault? In the snow? or..."
Yasunaga: "My revenge with Honma is personal! I will fight them under daylight, with the ultimate tactics of ancient Iga Ninjutsu!"

Chisato: "What is the ancient tactics?"
Yasunaga: "Death by slow torture!"

Chisato: "How do we slowly torture the enemy on the battlefield? I heard people complain that the battles are over too quickly."

Yasunaga: "That's because we allow the enemy to come to us. We need to choose a good terrain where they don't."
Chisato: "What kind of terrain?"
Yasunaga: "A terrain that does not feature a very tall hill with trees on our side. This place is good!"
Note: Actually this terrain belongs the "ambiguous" category. I find that our current army position also influences AI's decision whether to rush for a hill on our side. If my army is deployed further down (with the hill), the AI is more likely to rush for the hill on the top (with the hill). If my army is deployed further up (in the middle of two hills), the AI is more likely to stay put. The latter is better.
Chisato: "My lord, the Honma army has deployed right opposite to us, on the plain. Do we not charge them?"
Yasunaga: "Of course not. They will suffer a very slow, very painful death!

Bow Warrior Monks, come with me!"
Chisato: "My lord, that guy with the ugly helmet is the Honma Daimyo! Please shoot him with Bow Warrior Monk!"
Yasunaga: "Our Bow Warrior Monk is not artillery, Chisato. Please be more realistic..."
Chisato:

"Then what can they do?"
Yasunaga: "They will fish out each of Honma's units and torture them in front of his eyes!"
Chisato:
Yasunaga: "Monks! Many of you went to temples as a child becuase your parents did not want you to join the army - but here you are anyway. Why? Because your nature summons you to the battlefield! This is where you belong! Give all you have to the enemy!"
Bow Monks: "YEAH!"

Yasunaga: "Fire arrows, ready.... fire!"
Honma Bow Samurai: "WAAAA....

"
distant screams)
Yasunaga: "Honma's Bow Samurai are marching toward you! Lead them back! We will crush them!"
Hattori Bow Ashigaru: "The enemy is here! Fire arrows ready... FIRE!"
Honma Bow Samurai: "WAAAAAA~~~"
Honma Bow Samurai: "WAAAAAA~~~"
Chisato: "That was brutal...

"
Yasunaga: "Move on to the next! Honma's flank is exposed! Let's use the hill and attack them!"
Bow Warrior Monks: "In position! But we can't see the enemy."
Yasunaga: "Iga Ninjutsu is Good!"
Bow Warrior Monks: "Iga Ninjutsu is Good! (Accuracy boosts to 114!)"
Yasunaga: "Fire!"
Honma Yari Samurai A: "Hum? Somebody setting off fireworks behind the hill."
Honma Yari Samurai B: "Yeah... but why is the firework coming at us?"
A: "It is fire arrows!"
B: "NOOOO!"
Honma Yari Samurai A: "Can't let them get away! Let's chase down whomever shoots behind the hill!"
Honma Yari Samurai B: "It must be those monks! Let's sprint to get them!"
A: "Hm... how come there are suddenly a lot of fireworks?"
B: "NOOOO~~~"
Hattori Bow Ashigaru: "Rain fire on the enemy!"
Chisato: "A terrifying trap from hell!

"
Yasunaga: "There are still more behind the hill! Let's get them!"
Bow monks: "Iga Ninjutsu is Good!"
Note: Each bait cycle is about 3 minutes, enough to refresh the Inpire and Fire Arrow ability.
Honma Yari Samurai: "WAAAA~~"
Yasunaga: "Fish them out one by one! No one escapes!"
Note: Luring out samurai is easily done with Bow Warrior Monks, as they tend to charge up when receiving a certain level of damage.
Honma Yari Samurai: "That's the new Shogun of Japan, Hattori Yasunaga! His head is worth ten thousand koku!"
Samurai: "Charge!"
Yasunaga: "Huh? Want to play with me? Come!"
Note: I moved Yasunaga too close to the samurai, so the AI switched target half way.
Yasunaga: "How about that? Captain?:

Honma Yari Samurai: "Run~"
Chisato: "My lord, Honma's army no longer has an exposed flank... they are all protected by Bow Samurai."
Yasunaga: "Hm... don't they have Katana Samurai right in the middle of the first line?"
Chisato: "Yep, still there."
Yasunaga: "Bow Warrior Monks, march! We shoot in their face!"
Yasunaga: "Can you see the Katana Samurai's face?"
Bow Warrior Monks: "Very clear!"
Yasunaga: "Let's show them range! Fire!"
Yasunaga: "Yeah! Smoke them!"
Note: It seems to be my computer's problem - the fire arrows become smoke arrows after a while.

But one a target is shot and killed, he will again catch the fire and light up.
Yasunaga: "Your sky is darkened by smoke! There is nowhere to run! Resistance is futile!"
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