|Inashiro High School - No.6|
|Bats: Right||Throws: Right|
|Age||16 (debut) |
|Date of birth||6 September|
|Place of birth||Tokyo|
|Height||173 cm (5' 8")|
|Weight||61 kg (134 lbs)|
|Education||2nd Year High School (debut)
3rd Year High School (current)
|Manga||Act I - Chapter 135|
|Anime||S1 - Episode 45|
|Voice Actor||Sōichirō Hoshi|
Shirakawa Katsuyuki is a student of Inashiro Industrial and plays shortstop for Inashiro's baseball team. He is a utility player with fast legs and has generally good batting skills.
Shirakawa is a perfectionist seeking certainty. He thinks of practice as extension to matches, so never holds back during practice sessions. He is a shrewd person who is keen at observing opponents during games, and will exploit any signs of weakness shown by them.
He dislikes people who can't keep things clean.
West Tokyo TournamentEdit
Semi-finalsEditAfter Inashiro win their semifinals match, Shirakawa is with Narumiya and their second year peers when they see Miyuki standing near the toilet entrance in the stadium. He asks Miyuki if he got data out of their game but Miyuki says none from Narumiya's pitching. As their group leave, Shirakawa tells Miyuki that he'll regret his decision of not joining them forever, ten, or even twenty years down the line.
At Inashiro's first batting cycle, Shirakawa asks Carlos if Furuya's pitch is fast to which Carlos says he should see for himself, but advises Shirakawa not to bunt at the first pitch for he'll just get himself out. At-bat, Shirakawa finds himself surprised with Furuya's fastball and eventually strikes out.
On top of the fourth, after Furuya walks Carlos, Shirakawa bunts to get Carlos to second base. He notices that Furuya's pitch speed drops significantly when he throws from the stretch then signals his coach and Yoshizawa that it's now easier to hit Furuya's fastballs. On top of the fifth, with Tanba regaining his composure after Yamaoka's home-run hit, Tanba walks Shirakawa who thinks that they will not let Tanba recover from his shaken form without a fight.
Bottom of the ninth and Seidou an out away from winning the game, he hunches the plate, taking the same strategy as Carlos in facing off Sawamura. Sawamura feels immensely pressured and throws harshly hitting Shirakawa on the helmet. Shirakawa falls to the ground but grins and howls as he stands up. While he receive treatment at the dugout, he tells a teammate that he's glad Sawamura too, feels the pressure of the game. After their team scores two additional runs, Shirakawa celebrates Inashiro's victory with his teammates.
The evening before the Final round of Koshien, Narumiya waves to Inashiro's fangirls from the hostel window. Shirakawa comments that Narumiya enjoys the fuss and Carlos agrees saying that it's because Narumiya is a little boy.
In the final match against Komadai Fujimaki Inashiro lost in fourteen innings, finishing second place at the Koshien Tournament.
After Nationals, Shirakawa is shown complaining about balls left on the field and curses at people who can't keep things clean.
Fall Tournament FinalsEdit
He is seen with the rest of Inashiro's main roster to watch Seidou's finals match against Yakushi High.
In the third round of the tournament is the Inashiro Industrial versus Yakushi High. At the top of the first, after Sanada jammed Carlos, Shirakawa is out on a weak grounder to third. At the top of the sixth, Shirakawa on base, Yamaoka hit a long one and Shirakawa scores. The team scores additional runs at the top of the eighth and this combined with Narumiya's pitching, Inashiro wins the match.
Relationship with other charactersEdit
Shirakawa entered Inashiro Industrial after being invited by Narumiya. He tolerates Narumiya's cheeky persona and follows Narumiya's lead at crucial moments. When Narumiya gathered Shirakawa along with other Senior League players at Junior High, Shirakawa tells Miyuki Kazuya that joining Narumiya will surely avoid having to play against him; hence, highly acknowledging Narumiya's skill as a pitcher.
|“||Bunt and Run. An all-round prodigy.||”|
— Mine Fujio on Shirakawa's skill
Batting: Batting second for Inashiro's line-up, Shirakawa is good at bunting and though he lacks power, he is capable of hitting any pitch. He is also quick to determine whether a pitch is a ball or a strike.
- In junior high, he was in the same Marugame Senior League as Takigawa Chris Yuu.
- Person he respects: Kurosawa Akira, Ogiyahagi (comic duo), Bananaman (comic duo)
- Rankings from the guidebook:
- Second in having the best batting eye.
- Third at bunting.
- Third in infield defense.
- Favorite food : Spicy food and parsley
- He likes late night radio shows, so always listens to them in headphones.
- Shirakawa (白河) - White River
- Katsuyuki (勝之) - Widespread Victory
- "Is there anyone who would push himself so much because of one mistake...? " - about Narumiya 
- "I'm glad that 1st year is more than a mere idiot who doesn't feel pressure..." - about Sawamura 
- "People who can't clean up properly should just die..." 
|Narumiya Mei • Shirakawa Katsuyuki • Kamiya Carlos Toshiki • Yamaoka Riku • Fukui Kento • Yabe Kouji|
|Akamatsu Shinji • Yoshizawa Akimitsu • Mitsuichi Youji • Shima Ryouhei
|Former players||Harada Masatoshi • Yoshizawa Hideaki • Hirai Tsubasa