In the Houkago Play Series:

V.1 -
4-koma about a high-school gamer and his bossy tsundere girlfriend.

V.2 -
About a gamer and his mangaka girlfriend.

V.3 -
About a boy and a girl who are both gamers, though they play with different styles.

V.4 - R

V.5 & 7 - High Heels

V.6 - Maniax

A male homosexual couple cuddles and fools around in bed, while talking about their relationship.

A spin-off from Houkago Play, this time it's about two girls who talk about their sex life, boyfriends or being a fujoshi.

In the Houkago Play Series:

V.1 -
4-koma about a high-school gamer and his bossy tsundere girlfriend.

V.2 -
About a gamer and his mangaka girlfriend.

V.3 -
About a boy and a girl who are both gamers, though they play with different styles.

V.4 - R

V.5 & 7 - High Heels

V.6 - Maniax