Source: https://lyrics.darkmirage.com/?SongID=64

Title: Haru Uta ~Kururu~ 「春唄~くるる~」
English: Song of Spring ~Kururu~
By: Nana Mizuki (水樹奈々)
From: Bottle Fairy 「瓶詰妖精」 (1st ED)

Romaji

haru no kimochi wa, deai, kibou, mune ni yadosu
tomadoi nagara, kimi, chikadzuiteiku
dokidoki, dokidoki, shiteru yo
aa, sakura, sakura, sakura namiki
omoitomete, negattemiru
sakura, sakura
atarashii tomodachi dekiru, PINK ni nare

English

The feeling of spring brings meeting and hope into my heart.
While I feel uneasy, I got closer and closer to you.
"thump" "thump" my heart was beating fast.
Ah, Sakura, Sakura, Sakura trees by the road,
hoping, wishing,
Sakura, Sakura,
that I'll make new friends, and be covered with pink.

Kanji

春の気持ちは 出会い 希望 胸に宿す
戸惑いながら キミ 近づいていく
ドキドキ ドキドキ してるよ
でも
ああ 桜 桜 桜並木
思い込めて 願ってみる
桜 桜
新しい友だちできる ピンクになれ