Why do most of the protagonists in The Tutor have digital codes? What is the basis?

It is a homonym of Japanese pronunciation based on the names of characters.

Sawada Tsunayoshi (Sawada Tsunayoshi) (27/ rabbit): ツナ,Tsuna, tsu(2) na(7) is 27. (7 can be pronounced しち or なな(nana).)

Liudoumulang (696/69/ pineapple): ろくどぅむくろ, Liudoumulang, 6→ろく(ROKU) or む(MU).

Kyoya Hibari (18/ Bird King): ひばり,Hibari, yes 18, hi( 1)ba(8) read 1 and 8 respectively. In addition, the cover of 1→ひと(HITO) and 8 (Ba) Collection 18 is 10 years later.

=59:ごくでら,Gokudera, 59 years old, nine stages of Weiqi.

Takeshi Yamamoto =80: Benjamin Yamamoto (8)moto(0) Another: 8→や(YA), 0→ The shape is round (まる(MARU).

Obsidian clock =594.

Dino =D= 12

Rebirth =R

Sapphire = L

XANXUS =X Dad [10 (basic X)]

South squalo (squaro/scovaro) = smom (s/39)

Dr. Chamad =40 years old (Shamafeng)

Cullom = 96 (Cr = クロ [9 ]ロ [6 ]ーム).

Cola Tsai (Colonnello) = 0 1/56/C (コロロ [6] レロ) The headscarf in Colonnello is 0 1=56.

Prince Bell =B/50 (Belphegor)

God of wealth (poisonous snake) =M (God of wealth)

Prynne = 100= chicken essence (a figure of ten years)

Lancia =67 (Lan =6, Zia =7)

Wrench =48(87)S87 is the official code of 4→す(SU and 8→ぱ(PA).

Giotto (von Gola Ⅰ i) = g (1leader of Pongoliath)

Miura Haru = 86

Sasagawa Kyoko = 95

Zheng Xiao = Irie Shouichi =+ 1 (a figure of ten years, also appeared in front of the cartoon)

Sasagawa Ryōhei =32 (flat = 02, flat headscarf is 02)

Yuni =6 1/U 1

Prince Jill =R (Rajel)

Baqer =846/84

Kakimoto Chikusa = 19

Joushima Ken = J.