[Infinite Mission Cleared!] Weekday Prices Won by Everyone! Special Sours 'Tsundere' & 'Yorisoi' for 290 Yen Confirmed to Continue in May!
Kushikatsu Tanaka achieved its sales target of 50,000 special sours in April. As promised, the weekday discount price of 290 yen will continue through May, with a new challenge starting to maintain the price in June.
📋 Article Processing Timeline
- 📰 Published: April 27, 2026 at 20:30
- 🔍 Collected: April 27, 2026 at 12:01
- 🤖 AI Analyzed: April 28, 2026 at 07:10 (19h 8m after Collected)
Unisia Holdings Co., Ltd. (Headquarters: Higashi-Gotanda, Shinagawa-ku, Tokyo; Chairman and President: Keiji Nuki) is pleased to announce that its chain, Kushikatsu Tanaka, has successfully cleared the 'Infinite Mission' as the April sales of its special sours 'Tsundere' and 'Yorisoi' exceeded 50,000 cups. In response to the overwhelming passion of our customers who completed the mission, we will continue to offer the 'Infinite Sour' at a special weekday price of 290 yen (319 yen including tax) through May as promised.
'Infinite Mission' Cleared!! Weekday price of 290 yen won by everyone!!
The special sours 'Tsundere' & 'Yorisoi', launched on April 1, 2026, were sold at a special weekday price of 290 yen (319 yen including tax), compared to the regular price of 420 yen (462 yen including tax).
To decide the continuation of this weekday discount, we launched a customer-participation challenge called 'Win it together! Infinite Mission.' The rule was that if the combined sales of 'Tsundere' and 'Yorisoi' exceeded 50,000 cups in one month, the special price would continue the following month.
Thanks to the passion of many customers, we have cleared this mission! Every single cup ordered by our customers won the continuation of this price!
To celebrate this victory, the 'Infinite Mission' will start again from May 1 (Friday).
If we reach 50,000 cups in May, the special price will continue in June!
Grab this great opportunity won by everyone!
Win it together in May! Infinite Mission!!
Target Products:
■ Infinite Sour 'Tsundere'
A dry-style sour with refreshing tartness from lemon and lime and a hint of salt. It resets the palate from the richness of fried skewers with its 'Tsun' (sharp) acidity and strong carbonation. While the aftertaste is clean, it leaves a lingering 'Dere' (sweetness) that invites the next sip. We've expressed the dynamic balance of 'pushing away and pulling closer.'
■ Infinite Sour 'Yorisoi'
A light and easy-to-drink sour with the gentle sweetness of plum and the freshness of grapefruit. It features a mild sweetness that subtly enhances the flavor of the skewers without overpowering them. It represents a 'supportive partner' that stays one step behind the main star, the Kushikatsu.
■ Pricing:
Weekday Special Price: 290 yen (319 yen incl. tax)
Regular Price (Weekends & Holidays): 420 yen (462 yen incl. tax)
■ Participating Stores:
All Kushikatsu Tanaka locations (excluding Tokyo Dome store)
What is Mugen Kushi (Infinite Skewer)?
It is a new specialty developed by Kushikatsu Tanaka, priced at 50 yen (55 yen incl. tax). The first generation, 'Mugen Garlic Hormone Skewer,' launched in April 2025 (discontinued last year), became a hit due to its addictive flavor and fun. Currently, we sell two contrasting flavors: the rich 'Mugen Dote Miso Hormone Skewer' and the refreshing 'Mugen Yuzu Ponzu Hormone Skewer.' As of the end of March 2026, the series has sold over 20 million sticks cumulative.
About Unisia Holdings Co., Ltd.:
Established: March 20, 2002. Capital: 300 million yen. Chairman and President: Keiji Nuki.
Headquarters: 1-7-6 Higashi-Gotanda, Shinagawa-ku, Tokyo, Towa Higashi-Gotanda Bldg. 5F.
Business: Restaurant management and franchise development.
URL: https://unisia.co.jp/
'Infinite Mission' Cleared!! Weekday price of 290 yen won by everyone!!
The special sours 'Tsundere' & 'Yorisoi', launched on April 1, 2026, were sold at a special weekday price of 290 yen (319 yen including tax), compared to the regular price of 420 yen (462 yen including tax).
To decide the continuation of this weekday discount, we launched a customer-participation challenge called 'Win it together! Infinite Mission.' The rule was that if the combined sales of 'Tsundere' and 'Yorisoi' exceeded 50,000 cups in one month, the special price would continue the following month.
Thanks to the passion of many customers, we have cleared this mission! Every single cup ordered by our customers won the continuation of this price!
To celebrate this victory, the 'Infinite Mission' will start again from May 1 (Friday).
If we reach 50,000 cups in May, the special price will continue in June!
Grab this great opportunity won by everyone!
Win it together in May! Infinite Mission!!
Target Products:
■ Infinite Sour 'Tsundere'
A dry-style sour with refreshing tartness from lemon and lime and a hint of salt. It resets the palate from the richness of fried skewers with its 'Tsun' (sharp) acidity and strong carbonation. While the aftertaste is clean, it leaves a lingering 'Dere' (sweetness) that invites the next sip. We've expressed the dynamic balance of 'pushing away and pulling closer.'
■ Infinite Sour 'Yorisoi'
A light and easy-to-drink sour with the gentle sweetness of plum and the freshness of grapefruit. It features a mild sweetness that subtly enhances the flavor of the skewers without overpowering them. It represents a 'supportive partner' that stays one step behind the main star, the Kushikatsu.
■ Pricing:
Weekday Special Price: 290 yen (319 yen incl. tax)
Regular Price (Weekends & Holidays): 420 yen (462 yen incl. tax)
■ Participating Stores:
All Kushikatsu Tanaka locations (excluding Tokyo Dome store)
What is Mugen Kushi (Infinite Skewer)?
It is a new specialty developed by Kushikatsu Tanaka, priced at 50 yen (55 yen incl. tax). The first generation, 'Mugen Garlic Hormone Skewer,' launched in April 2025 (discontinued last year), became a hit due to its addictive flavor and fun. Currently, we sell two contrasting flavors: the rich 'Mugen Dote Miso Hormone Skewer' and the refreshing 'Mugen Yuzu Ponzu Hormone Skewer.' As of the end of March 2026, the series has sold over 20 million sticks cumulative.
About Unisia Holdings Co., Ltd.:
Established: March 20, 2002. Capital: 300 million yen. Chairman and President: Keiji Nuki.
Headquarters: 1-7-6 Higashi-Gotanda, Shinagawa-ku, Tokyo, Towa Higashi-Gotanda Bldg. 5F.
Business: Restaurant management and franchise development.
URL: https://unisia.co.jp/