Jinsei - Life Consulting (TV)

In ep 1 at 0:09 there is a Mao Amatsuka from GJ-bu figure sitting on top of a game of jenga.

In Episode 3, Kozuki, the one who is riding the bike, says "You are shock!". Its word play on the famous line, from the "Hokuto no Ken" theme called "Ai o Torimodose!!". Plus, Kozuki is dressed up like one of the many typical punk-spike-ladened-armored enemies in the "Hokuto no Ken" anime.

In Episode 4, while the Newspaper Club 2 are at the beach thinking some good advices, one scenario suggested by Ikumi Suzuki is that the girl took shelter on the boy's umbrella in order to prevent her uniform from dissolving in the rain. This is a reference to the anime "To Love-Ru", where almost always "Lala's" uniform or clothes dissolves into nothing with little effort.

In Episode 4, Kujo Fumi suggest that the boy turns into a girl when she gets wet, a clear reference to the anime "Ranma ½", even though blurred you can clearly see "Saotome Ranma's" hairdo and a pixelated "Panda/Saotome Genma", as well.