4.10 Nakano Sun Plaza Taikai Momoclo Haru no Ichidaiji ~Mabushisa no Naka ni Kimi ga Ita~ (4.10中野サンプラザ大会 ももクロ春の一大事〜眩しさの中に君がいた〜) is a live concert of Momoiro Clover held in Nakano Sun Plaza, Tokyo on April 10, 2011. This is their first annual Haru no Ichidaiji spring concert. The concert is divided into two sessions, the first is Momoclo All Stars 2011 (ももクロ☆オールスターズ2011) and followed by Akari Hayami FINAL Soshite... (早見あかりFINAL そして…)
The concert also marked the graduation of Akari Hayami and the final concert to use Momoiro Clover (as they later added Z to the name) as their name. The concert DVD is released on August 24 and is their 2nd DVD concert overall.