Thugs are attacking Ryoma's business and assaulting Ryoma at night. The adults around Ryoma suspect that something nefarious is going on, so they start an investigation while Ryoma works on improving security at his business.
The focus was mostly on
hand-to-hand combat...
...كان تركيزي منصبًا على القتال اليدوي
Die meisten davon
waren allerdings waffenlos.
Se centró sobre todo
en el cuerpo a cuerpo,
Se centró sobre todo
en el cuerpo a cuerpo,
Enfin, surtout ceux à mains nues.
Più che altro 
era combattimento corpo a corpo.
A concentração era principalmente
em combate corpo a corpo.
Занимался я в основном рукопашным боем,