Kakushite! Makina San!! Season 1 Episode 3

Makina, armed with inaccurate knowledge about sex, tries to seduce Eita. However, Eita, inexperienced with girls, is too busy awkwardly trying to be considerate. Sensing a lack of progress, Makina, under the pretense of taking care of him, barges into the bathroom while Eita is taking a shower.