Kamaishi (Iwate) - lost in 2nd round of Tohoku Super-Regionals
Certainly selected because they were devastated by the tsunami back in 2011, Kamaishi was on life-support right off the bat after being blown out by Takada in their first game 10-1. They fought back through the repechage (note that in the fall tournaments it isn't necessarily a single elimination tournament in the prefecturals. Some have round-robins, other like here in Iwate have repechages in the regionals) to reach the prefecturals. And while they struggled at times against no-name competition, they reached the finals where they tried to hold firm against Moriokadai Fuzoku, but fell 6-3. They did the same against Tohoku tying the game at 2 with a squeeze in the top of the 9th and held on for 2 more inning before being sent off 3-2 in the 12th.
Iwama Dai (岩間 大) is the team's ace, but I don't have any info on his pitching. The stats from the two losses don't inspire confidence though. In 19.2 IP he had given up 18 H, 5 ER, 3 K, 6 BB.
Offensively, again with small sample size, there were some batters that did have success in their two losses to known squads. Not surprisingly, 2 of them are their 3-4 hitters, 3B Kikuchi Yuunosuke (菊池 勇之介) and 1B Aranuma Yasuhiro (新沼 康大). At the bottom of the order is 2B Ishizaki Masutomo (石崎 仁鵬) who laid down that squeeze.
But while they were able to at least hang tough against better competition, it's still not against strong competition relatively speaking and as a result I don't think their prospects are that good.
Nagata (Hyogo) - lost in quarterfinals of Hyogo prefecturals
Nagata performed adequately during their fall run, reaching the
Nagata may have the best prospects of all the 21st century teams if only for one thing - their ace Sonoda Ryousuke (園田 涼輔) who is garnering attention from pro scouts. Discounting for local stadiums' radar guns he probably throws in the mid-to-upper 130s with a changeup to go with the standard slider-curve combo. In every game he pitched in he averaged at least a K/IP including 9 in their loss to Shinkou Gakuen.
The only problem is that he has to be on point all the time. There is no mention of anyone on offense for the team, and worse yet, in 5 of their 7 games they scored just 2 runs, and in another they scored just 3. This against lesser competition raises a red flag because you can't win if you can't score.
Shoudoshima (Kagawa) - lost in 1st round (quarterfinals) of Shikoku Super-Regionals
Tosa has Shoudoshima to thank for getting invited because if the JHBF was going to take Shoudoshima as a 21st century team, Tosa had to be included.
Shoudoshima also won the Kagawa prefecturals, defeating upper-average teams such as Marugame and Jinsei Gakuen, and actually handed Takamatsu Shougyou their only loss in the fall (in 12 innings!!). However, that success did not translate as they lost their opening game of the super-regionals 4-3 to the aforementioned Tosa.
Their ace, and only pitcher, is Hasegawa Taiku (長谷川 大矩). There is no info on him, but the stats against Takamatsu Shougyou and Tosa have him at 20 innings, with 10 Ks and 0 walks.
That's right, zero, zip, zilch, nada. To quote Michio Kaku, "it means nothing".
It blows my mind.
Okay, enough commercial references...
A 0 walk performance means that he has to be around the zone a lot. So much so that the defense will surely be busy all the time. And with poorer K numbers than his counterpart Sonoda at Nagata, the margin of error certainly is smaller. Though with 16 hits in that same 20 innings, he seems to avoid getting batted around at least
Offensively they seem to be as potent as Nagata, scoring 2 or 3 runs in 4 of their 6 games. Furthermore, Hasegawa is their #3 hitter and along with C Uematsu Hiroki (植松 弘樹) and 1B Ishikawa Susumu (石川 生強) consist the heart of the lineup, and of course where they have any success (the other members in the lineup were a combined 3-47 in those 2 games!!).
With black holes surrounding the lineup and a pitcher who goes mainly to contact, Shoudoshima is skating on about the thinnest of ice.