Team Chouza's days take on something of a regular schedule. Early in the morning they meet up and discuss the goals for the day. Warm-ups combine chakra control exercises with physical activity. Chakra control comes fairly easily to Genma, so the only difficulty is in multitasking. He's never been one to turn down a challenge. After warm-ups, they take a D-rank.
In peacetime, D-ranks are errands for the villagers. Not so in wartime. In wartime, everyone of any rank is necessary to assist in keeping Konoha running. So Team Chouza run messages across the village, help out in the hospital, sort [unclassified] paperwork in the Mission Room, and collecting weapons from training grounds for repair. In peacetime, these kinds of missions are completed by Genin or Chunin Corps members. But everyone with experience has been pulled to the front lines. The Corps members may not see combat, but they are essential to keeping Konoha's forces supplied and organized. When the team is on hospital rotation, Chouza-sensei has Genma assist the nurses.
In the Academy, he had been tapped for potential training as a medic-nin. He knew nothing would come of it. Even as an Academy student, Genma had shown more talent for killing than medicine. It's simple math for the village: why train an average medic when you could get an expert assassin for the same amount of time and effort? So his unofficial training at the hospital is a pleasant surprise. It's wartime; they don't have the personnel for Genma to be properly apprenticed. Mostly he learns how to treat injuries the normal way, but he soon gets to practice the basic jutsu.
It quickly comes in handy. For all that Gai-kun's genjutsu is powerful, his taijutsu is devastating; sometimes to himself. Genma gets a lot of practice healing minor scrapes and bruises, setting dislocated fingers and shoulders, and checking for broken bones. None of it stops Gai-kun. Part of Genma admires Gai-kun for it, but the rest just worries. Learning limits and restraint is a part of training. Chouza-sensei taught them that. But he also taught them that the village becomes before all else. That is why they do their D-ranks in the morning, then train after lunch. Symbolically, they are putting betterment of the village over betterment of themselves.
For lunch, Chouza-sensei sometimes takes them out to eat at his wife family's restaurant. His wife, Momo-san, is very nice and a good cook (Genma's heart hurts, he misses Mom so much). Other times Genma brings bentos from home. (His team seemed to be under the impression his sister makes them and Genma doesn't correct them. That was probably her intention the first day; his team assuming that Akemi is home.) They always talk during lunch. Tactical theory mostly, but also about important things they need to know.
The way the village works, how to interact with civilians without scaring them, why certain behaviors are acceptable in public and others aren't. Genma loves these talks. It gives real insight underneath the underneath (it's almost like the family dinners with Mom before …). He concentrates on learning how ninja culture differs from civilian culture. There are a lot of odd differences. Apparently, civilians get really hung up on proper ages. They aren't even considered adults till they hit eighteen. Someone younger than that fighting or marrying or drinking is frowned upon and rather scandalous. It's really weird. Shinobi are considered full-blown adults at fourteen; younger in wartime, but civilians aren't told that. Before that, they are technically in the guardianship of their sensei. (Mom's teammates were long dead, and Akemi's were scattered across the Land of Fire due to the war. Shiranui are solo operators anyway. Genma knows that someday he will be alone as well. Hopefully, it would be solo missions and not…)
After lunch, Team Chouza works on teamwork for a few hours. Again, this is symbolic. The priorities of a Konoha shinobi: first your village, then your team, then yourself. For team training, they are given a task and must work together to complete it. Sometimes it is another D-rank, sometimes it is just a training exercise. Either way, it is rarely a straightforward challenge. Genma had the most fun when they were dropped off a ways into Training Ground 44 and told to find their way out.
Ebisu-kun had flipped out and Gai-kun's enthusiasm hadn't helped. Calming them down had been harder than getting out. The forest had been scary at first, but they mostly managed to avoid the wildlife. The one time they had to fight something hadn't been too bad. Its hide was thick, but liberal use of kunai and senbon slowed it down enough for Gai to break its neck with a well-angled kick. Genma still wasn't sure if it had been an oddly-shaped tiger or a weirdly-striped bear.
After the teamwork exercise, they always have individual training. Chouza-sensei's only rule is that they diversify ("Specializing is all well and good but over-specializing leaves you open" Mom imparted, while teaching him the basics of a lightning jutsu used to distract or blind). Genma rotates his practices. Some days he'll practice his aim with senbon or kunai using detailed anatomic targets. Learning to kill is easy and necessary ("Never leave an enemy behind you. Make sure they can't do anything before you move on." Mom drilled Akemi before that final mission.), but disabling an enemy would accomplish the same thing and create an opportunity to acquire information later. It's also harder, because your opponent doesn't have the same limits. Other days he studies healing at the hospital. Sometimes he goes back to basics and studies the building blocks of his family's style – his mother's style.
It's all about adaptability and precision. Genma is nothing special; he's not stronger or faster, he doesn't have a kekkei-genkai. That is why he takes every advantage he has and uses it. ("Always fight on your own terms; fair fights are for Kages and the dead." Mom never shied away from telling him what he needed to know.) The Shiranui style isn't a style so much as a collection of techniques. The taijutsu uses flexibility, speed, and precision to target joints and prevent the enemy from using their abilities to the fullest extent. Senbon are his primary weapons, coated with a variety of poisons. Fast-acting poisons, either deadly ones or paralytics, depending on the goal of his mission. Kunai seem to be more dangerous due to the visible blood and damage. But people who have better than average anatomy knowledge and precision prefer senbon. Senbon are great because of the way they stick in the body. They pin muscles, pressure points, and organs. Enemies can't fight if they can't move. Or breathe.
The jutsu in the Shiranui style seem to be random. None of them are the one-shot kills that clear battlefields or earn someone a name in the bingo books. Some could be considered flashy: a lightning-jutsu to blind or distract; a fire-jutsu just strong enough to light clothes or surroundings. Others are nearly unnoticeable: a modified earth-jutsu that makes the ground slick; lightning chakra channeled through the enemy's nerves. What they all have in common is low chakra drain.
Genma hasn't learned all the jutsu Mom included in their style yet. It's hard to learn them without Mom or Akemi to teach them. Chouza-sensei would help, but on the first day he told them that any family techniques should remain within their family. Their jutsu aren't really secret, but Genma can't bring himself to ask someone else to help him the way Mom used to.
He just can't wait for Akemi to get back. Everything is so hard on his own. His team is nice, but they're not family. They won't understand. He can't ask to practice his jutsu on them. He can't ask how much to increase his dosages for building poison tolerance. He can't talk to his teammates about the proper angle to kill someone with a senbon. (He can't tell them how much he misses Mom and Akemi.)
Gai-kun is innocent and noble. Learning the Shiranui family specialize in underhanded and stealth killing would horrify him. Ebisu-kun's entire family is on the light side of Konoha; they turn their noses up at assassination. What Genma's family does is 'better kept quiet as it is bad for the reputation of the village.' And Chouza-sensei is the head of a noble clan, the Akimichi at that. No one would ask a noble clan to dirty their hands. If they choose to do so, that is their prerogative and it is usually an area that is behind the scenes: Intelligence or Torture & Interrogation, even ANBU.
ANBU have reputation, prestige, and anonymity. All luxuries that Genma's family does not get. Assassination is their meal-ticket and their service to the village. The Shiranui family lives, kills, and dies for Konoha; it's what they've done since the foundation of Konoha. It's what his mother, and her mother before her did; what Akemi is doing and what Genma will do. And as long as Konoha needs them, the Shiranui family will continue on.