D3 Publisher has announced that first-print copies of Natsuiro High School: Seishun Hakujo will include a bonus costume set called the “Mini Bikini Golden Ball”. As the new screenshots reveal, the costume set contains itsy bitsy teeny weeny bikini costumes for the girls of Natsuiro High School to wear.

Natsuiro High School‘s gameplay has also been detailed more, including the protagonist’s daily routine and two gameplay systems:

Daily Routine

• Morning—check the calendar for plans, and if a date has a heroine icon, an event will occur that day.
• Afternoon—talk to islanders, receive requests (essentially, this game’s missions), and take photographs.
• Evening—organize the photos, and read the day’s emails, which emails will trigger events.

Gameplay

• Accel Action Mode—when activated, this slows time down, making it easier for the protagonist to capture the perfect panty photo.
• Suspicious Person Gauge—doing perverted things will fill this gauge, and if it fills up too much the police will chase the boy down; if the protagonist gets caught too often, he will be suspended from school.

For more on Seishun Hakujo, check out our tag.

Natsuiro High School: Seishun Hakujo is due to launch on Playstation 4 and Playstation 3 on June 4 in Japan. The PS4 version will cost 7,480 yen, and the PS3 version will cost 6,980 yen.

Thanks, 4Gamer and Hachima Kikou.