If you are flying into Haneda Airport, it will take an hour to get to TKU if you go there straight.
From Haneda, you take the monorail to Hamamatsu cho. Change to Keihin Tohoku Line (rapid) bound for Omiya. Get off at Akabane, and change to Saikyo line bound for Shinkiba (Ikebukuro direction) . 3 min later, you get off at Jujo and walk 5 min to campus.
You can also take Yamanote line from Hamamatsucho to Shinjuku or Ikebukuro to change to Saikyo line. If you decide to get off at Ikebukoro for a hotel, again you take Saikyo line at Ikebukuro and get off at Jujo. It will take about 7 min. Or you can take a taxi from Ikebukuro.