The title is a pun, and it's the whole song in one word. とくべチュ glues together 特別 (tokubetsu, "special") and チュー (chuu, the cute Japanese sound for a kiss). So the hook, "とくべチュ して?" [give me a special kiss?], is the singer asking for a kiss that belongs only to her. And she is not shy about the bar being high: "Oh baby「I love you」じゃ足りない" [Oh baby, "I love you" isn't enough]. She doesn't want to be loved, she wants to be number one, and "一番 大事がいい" [I want to be the most important] says it flat out.
What makes it fun is how sugary and a little bit intense it gets. The world is "ゴミめいた この世界" [this trash-like world] and he's the one pure thing in it. She wants a "ほどけない リボン結び" [a ribbon knot that won't come undone] and asks him to "小指 キュッて縛って" [tie our little fingers tight], a nod to the Japanese idea of the red string of fate tied to your pinky. キュッ is a sound word for something pulled snug, worth learning on its own. Then she goes full dessert: "イチゴみたいに 座ってもいい?" [can I sit there like a strawberry?], picturing herself as the strawberry on top of a ショートケーキ (Japanese strawberry shortcake). It's adorable right up to "苦しいのが好き" [I like it when it hurts] and her insisting this is not 束縛 (sokubaku, controlling someone in a relationship). Possessive? Very. But it's sung with such a straight face that you end up grinning.
=LOVE is a Japanese idol group formed in 2017 and produced by Rino Sashihara, a former member of AKB48 and HKT48. Its members were chosen through an audition held with the Yoyogi Animation Academy, and the group records for Sacra Music.
Their first album, Zenbu, Naisho., came out in May 2021.