Well I never said I was going to be fair! You started it~ [He's definitely keeping a note to himself that Akito's ticklish, to be used for future reference of course]
A-Ah- [Tsuna presses his lips together for a few seconds, eyes wide in guilt, when Agito shifts and speaks] Oops, guess we're too loud, heh. [He can hardly contain his little laughs though, as he tries to lower his voice again]