Thanks for the review, R.C.D!
The reason why chapters end in the middle of something happening, is because having a moment where nothing happens is very rare. If I would say that this character is sleeping and the chapter ends there, well... something IS still happening, because we read that the character is doing something (breathing while sleeping). So, in order to make a chapter end without anything happening would be when we read about a stationary scenery, where nothing is moving at the moment... which is very rare.
However, if you meant to say something more specific like "there is this action/dialogue/event going on AND the chapter ends in the middle of it"... first of all, it's not every chapter: there are several of them where the said action/dialogue/event is concluded or it's just during a transition moment, where you see a character going to the next room or waiting.
You don't need to read the next chapter to understand how "the walk towards the next room/wait" will proceed... rather you want to read the next chapter for learning the next events, which either take place during said transition moment or once the wait/walk ends. There are other transition moment methods, mind you.
"The Beginning Returns - Chapter 7" and "Playing time with the walls - Chapter 1" are some of the many chapters where said "end in the middle of" thing doesn't exist.
Second, the reason why those other chapters end during the middle of a dialogue/action/event is because... it all depends from the situation: if the character is thrown into active situations, of course it's probable to see chapters ending during the action/dialogue/event happening in that moment. During the more relaxing situations, like chatting with friends during lunch, then it's less probable that chapters would end in such way.
I hope I answered your question: feel free to ask more of them, if you have any other doubts!
Alright, send in a review or leave in a favorite/follow if you are liking the story so far!
"What the?!" Her neck tilted upwards, as her eyes were expanded. "I haven't heard any steps!" She quickly stands up, as her hands shook off the dust on her shirt. "I can't believe my superior hearing skills couldn't caught any of his step sounds!"
"You are challenging your luck…" The male voice was coming from the distance, seemingly to the right. "… next swing will be the end of you."
Mirii's right hand went on her back's upper side, as she massages it slowly.
"Hmpf… you might as well try splatting me with your cowardly tactics." Her head rose. "I'll still see you as a weak-minded fighter, who trembles in front of perfection."
Her mouth flattened a bit, as her arms folded.
"… I'll humiliate you…" The male voice was coming from the wall.
Mirii's eyes squeezed a bit.
"… why he's not attacking me? I don't understand…"
She bended forward, as her face went paler.
"I know he's here… is he watching me from the right corner?" She took one step forward.
"No!"
Mirii jumped, as her posture lifted and her mouth open.
"Did he said"
SWISH!
The girl fell on her left side, as her head went near the wall.
"Nnnggh!" Her teeth gritted, as her eyes squeezed.
"… you are luckier than I thought…" The male voice was coming from the hallway. "Your friend was about to see me…"
Mirii stands up, groaning and walking in front of the opened door, bending forward and watching the hallway, while turning her shoulders left and right.
"Bu-but… how he manages to hide from my sight?!" Her eyes expanded, as her head tilted upwards. "What kind of technology is this Squid using?! An invisibility device?!"
Here! Here!
Mirii turned behind: on the wall in the distance, her taller image was pointing at her gun resting on the floor. The girl's head rose, as she walked towards it.
"… no, even more suspicious is why such Squid is not attacking me. I have lowered my guard, like a fool…" Her eyes squeezed. "Why I can't pay any attention like before?! What's happening to me?!"
She stopped, bending her knees down and picking her gun with her right hand: she rose back, as her irises rested on her weapon and her right wrist rotates it a bit around. Her right hand lowered, as her shoulders turned to her right: a door-shaped hole was standing near the wall's left corner, surrounded by darkness.
A sink was placed behind the wall, almost completely covered by darkness.
"… could it be…?!" The girl walked towards the sink. "The bathroom I was looking for…?!"
Passing through the hole, Mirii's eyes were pointed at the sink: a mirror, who was attached to the wall, was place above it. Mirii's left hand went over the handle, rotating clockwise. Her irises stared at the sink, as it presented dust and a tone of grey on it.
Water began coming down from the faucet, as a smile grew on Mirii's face.
"I couldn't stand all this dirtiness anymore!" Her right hand put her gun near the faucet.
Her hands went in the pouring water, as they began rubbing on each other. Her right hand took her right tentacle, putting it on the sink's right edge: the tentacle slides towards the middle, as the water hits the middle part and her right hand began rubbing on its dirty side.
"Obviously, I wasn't expecting soap… but how can I complain? I'm finally cleaner than before!" Her eyes sparkled a bit.
A small cry came from Mirii's right side: her ears rose. Her left hand went on the handle, turning it counter-clockwise: the water stream shrunk into nothingness. Mirii's shoulders turned to the right, seeing her taller image with her eyebrows up and her mouth downturned.
"… is there a problem?" Mirii's head rose.
Fear… fear…
Mirii's right hand picked her gun, as she walked towards the image.
"Fear? Could you specify?" Her arms folded, as she stopped in front of her.
An image of the sink appeared on the image's left side, with water coming from the faucet. Mirii's mouth opened a bit.
"She can't stand… Inkling Water? Strange…" Her eyes blinked twice. "Perhaps, she's not an Inkling as I thought she would be…"
Mirii's head turned to her right, seeing the opened door.
"… there are so many questions left unsolved, it's starting to give me a headache." Mirii sighed, as her head lowered and her eyes closed. "I can't let myself being dragged by any more events… I must reach the Agents' base of operations at soon as possible!"
Her head rose back, as her eyes opened and her eyebrows went a bit down: she began walking towards the opened door, grasping her gun tightly.
"I think that the graffiti on the walls are an interesting clue to consider…"
Her feet stepped on the hallway, as she turned to her left and seeing a window in the distance.
"… it might imply that outsiders did visit this building." Her eyes squeezed a bit. "This could give me the exact location on where the Agents might operate… if I consider the golden rule learned in a city documentary."
Mirii resumed her walk, in a faster pace.
"Those scoundrels are known to be impatient: they often refuse the higher floors, since it would be pointless for their graffiti showcase." Her head lowered. "Thus, it's probable that Agents might be located at the highest floors!"
The girl began running: step noises' echo were coming ahead. Mirii's irises shrunk, as her feet slowed down until they stopped. Her face went paler, as her head turned to her left.
"Curses! They must have heard my steps!" She walked in front of the door, as her left hand went on the door handle. "How I wish I could properly face the enemy…!"
Clic.
Mirii's mouth opened. Her left hand pushed the door, as she walked inside. Immediately she turned behind, as her left hand slowly pushed the door back.
"Uff… I… I wasn't expecting this." Her head lowered, while she bended forward. "… I have to come up with a strategy, if they find me in here…"
The girl turned behind: she gasped loudly.