[KOGYARU Graduation Memorial] 8th KOGYARU x Birthday Collaboration Launches March 28! Triple Reveal Featuring the Highly Anticipated 2nd Monchhichi Collaboration & First-Ever 'Natuul ES' Participation

Elementary school gal media 'KOGYARU' and neat-style elementary school media 'Natuul' will release their latest collaboration items with 'Birthday,' a baby and children's specialty store operated by Shimamura Co., Ltd. (Headquarters: Saitama City, Saitama Prefecture; President and Representative Director: Iichiro Takahashi), at stores nationwide and the official online store starting Saturday, March 28, 2026.

This 8th installment delivers a luxurious lineup to meet fan expectations, including a memorial project celebrating three graduating KOGYARU members, the second 'Monchhichi' collaboration following a series of immediate sell-outs, and the long-awaited first participation of 'Natuul.'

Three Major Highlights

1. [KOGYARU] Items Supervised by 3 Graduating Members

As a culmination of their activities, the three members graduating this month—'Rara,' 'Ryua,' and 'Chanmoa'—have supervised their own memorial items. From apparel to accessories and shoes, the lineup is a must-see for fans, packed with their personal touches and 'gal' spirit.

*Only select items are supervised by the graduating members.

2. [Monchhichi] 2nd Collaboration Due to Popular Demand! New 'Gal-Cute' Apparel

Following the massive response to the previous release, the special collaboration with 'Monchhichi' returns. This second installment features pop and 'gal-cute' apparel items that get a head start on summer. It is a one-of-a-kind design that fuses the character's cuteness with KOGYARU's trendy style.

*Monchhichi collaboration items will be sold via the Shimamura Park Online Store 'Birthday' section.

3. [Natuul ES] Long-awaited First Collaboration!