Kumin-senpai to Ohirune Shitai!

Notes
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Sword Art, Chuunibyou, OniAi, Sakurasou -
"Sword Art Online", "Chuunibyou Demo Koi ga Shitai", "Onii-chan Dakedo Ai sae Areba Kakeinai yo ne!", and "Sakurasou no Pet na Kanojo".
Yeah, shortening their names make a lot of sense, doesn't it.

Foreword, "deathly" -
Originally "Death" in English.
Reference to Dekomori and her excessive use of "death" instead of "desu".

Raison d'être -
A french phrase meaning "reason for existence".

Some brand -
Kappa, an italian sportswear company.
Probably.

Asunaro -
A phrase originating from "Asunaro Hakusho (あすなろ白書)", a manga series.
When it was adapted into a drama series, a scene where Kimura Takuya embraces Ishida Hikari from behind got famous, mostly among women, giving birth to a name for this style of hugging.

SD -
Super deformed.

Kumin -
"Ward residents" is also read as "kumin" in Japanese.
When typing in Japanese, you type in their alphabet, then press a button to convert it to kanji.

I am the body of my soba -
Reference to Fate/stay night.
Probably. Hopefully.