I wish the same for myself
A jocular, idiomatic expression used to express a wish to emulate someone or achieve the same state. Originates from the historical figure Date Masamune's childhood name, 梵天丸, and his aspiration to be like the Buddha Bonten.
Seeing his success, I thought, 'I wish the same for myself.'
From the childhood name of Date Masamune, 梵天丸 (Bontenmaru), combined with もかくありたい ('I also wish to be like this'). The phrase expresses a desire to emulate the greatness of Bonten (Brahma).