moe's manga / #Seinen(2)

vol 4 0.2 confused here abt ito did he just eat his own c*m and said its a bad habit ok so he did this all the time in the past wtf so he didnt feel anything or smell anything vol 10 ch3 itos father apologised for killing the guppy but didn't ito eat it in the previous panel???

honestly i saw the anime like so many years ago and heard about the manga being better but never read it.. now i finished reading it and while reading it i felt a strange sense of deja vu.. as if i've already read it but forgot about it.. the ending got me all puzzled.. i oughta read tg:re