Jajka (Jajka girls und panzer, GUP)

Before the match begins, she taunts Katyusha fiercely. During the match against sixteen T-70 light tanks, she deploys eight 7TPjw light tanks and two 20mm TKS tankettes. Against Katyusha's Volunteer Army, she primarily uses ambush and trap tactics. However, this is insufficient, and her team suffers losses. Bonple's situation becomes dire when Nina calls in a second echelon of sixteen tanks for a double envelopment. Facing even greater enemy numerical superiority, Yaika and three other tanks camouflage themselves in the snow, using Uzski's tank as bait to lure the main enemy force away from the flag tank. As soon as the tanks pass, Yaika and her remaining tanks attack Nina's tank and knock it out, winning the match. After the match, Yaika bursts into laughter, drunk with success, and challenges anyone who wants to beat her in the "Tank Athlon".

Yaika (ヤイカ, Yaika) is the head commander of the Bonple High School Sensei and Tankoathlon Team.
Little is known about Yaika before Ribbon Warrior, except that she is proficient in virtually everything tank-related in Bonple; that she suffered a humiliating defeat at the hands of Pravda in the first round of the 63rd National High School Senshado Tournament, leaving her with a great deal of bitterness from that defeat and an immeasurable hatred for Pravda; and that she managed to make a name for herself in tank building by winning the Tank Building Tournament last season, earning herself the nickname "Queen of Tank Building." She holds tank building in far higher regard than Sensha-dō.

She joins the current season of Tanktolon after learning that Anzio will be participating. She later interrupts a match between Centipede and Anzio, deeming it weak and uninteresting due to the vehicles involved. After Pepperoni fails to attack Yaika's tank, she mocks everyone, commenting on the lawless nature of Tanktolon.

Rookie Tategoto, Anzio's ally, is defeated by Bonple due to Tategoto's inexperience and Anzio's lack of firepower and awareness. Yaika, on Bonple's ship, prepares the jury to celebrate their next match against Pravda (under the name "Katyusha Volunteer Army"), giving her the opportunity to exact revenge.

Her height is 171 cm
Jaika is a girl of average height with long, light-colored hair and green eyes. She wears her light-colored hair in a long braid, which she pulls back into a bun. Jaika is often seen wearing the Bonpleu High School sensei uniform (with accessories befitting her rank), and sometimes in her school uniform.
Nationality: Polish, origin: West Slavic, European.
Age 18, birthday September 19.
Speaks Polish.
Religion: Christianity (Catholic Church of Poland)

At first, she appears calm and charming, albeit a bit arrogant. Later, it turns out she's arrogant, sullen, thirsty for revenge (especially after a humiliating defeat at the hands of Pravda), and extremely ruthless. She appears to be very experienced: she manages to defeat a team fielding over thirty tanks (not without losses) with eight tanks and two tankettes at her disposal. At the same time, her resounding success has gone to her head and made her overconfident. According to Uzski, she also wears a lot of makeup due to insecurity about her appearance.
a calm and charismatic, but at the same time slightly arrogant person.
Her true nature is later revealed: she becomes condescending, sullen, and obsessed with revenge after a humiliating defeat to Truth High in the first round of the 63rd National High School Sensha-do Tournament. She displays extreme ruthlessness.
She is a highly skilled commander, as demonstrated by her victories over teams fielding over thirty tanks using only eight tanks and two tankettes. However, her resounding success makes her frivolous and overconfident.
However, Yaika also has a good side.
Her favorite genre of music is military marches, and her favorite food is scrambled eggs.