https://twitter.com/UT_mizsee/status/957925447555104768/photo/4
heres the commentary from his tweet
やらなきゃいけないと思った（使命感） #繋がらなくていいから俺のcharaを見てくれ

This is why I put a ring on my Vector. She gonna feel like a wife with me.

-sees commentary-

They're really skipping the pasta botes, huh? It do be like that, huh?

the most confusing line in this panel was about a match with a certain little sister. I don't know whose little sister Kaga is talking about. If anyone can tell me the context of that line it would be welcome.

persocom01 said:

the most confusing line in this panel was about a match with a certain little sister. I don't know whose little sister Kaga is talking about. If anyone can tell me the context of that line it would be welcome.

Maybe referring to Akagi-chan?

persocom01 said:

the most confusing line in this panel was about a match with a certain little sister. I don't know whose little sister Kaga is talking about. If anyone can tell me the context of that line it would be welcome.

According to the mangadex translation, the context seems to be with Kaga herself.

Having a heat endurance contest with Kaga, you're bound to lose since Kaga's literally the heat source.

While I could translate most of the comment (pretty interesting), I don't know the meaning of Shou Xing (寿星).

Marqant said:

While I could translate most of the comment (pretty interesting), I don't know the meaning of Shou Xing (寿星).

shou xing just means the birthday person(it's
the God of longevity，寿 in Chinese means“longevity"). a good wish

Huh... it's not even winter any more.